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Privacy Policy Effective Date: April 28, 2026 / Privacy Policy / 1. Data Collection We follow the principle of "Data Minimization." We only collect information strictly necessary for the core functionality of the App: Account Information: Your email address, used for unique identification and synchronization of access permissions. Technical Data: Mobile device model, operating system version, and unique device identifier. This is used solely to optimize NFC power transmission and communication parameters for your specific hardware. Operation Logs: Time of unlock, Device ID, and User ID. These logs allow you to monitor the security of your locks. 2. Data We DO NOT Collect To protect your privacy, we explicitly state that we DO NOT collect: Precise or approximate Geolocation data. Contact lists or social media profiles. The serial number of your phone's internal NFC chip. We do not write any private data into your phone's Secure Element (SE). 3. Permissions Notice (NFC and Location) On certain versions of the Android operating system, enabling NFC communication may trigger a system-level request for Location Permissions. We hereby declare that this is a technical requirement of the OS for low-level hardware communication only. We do not access, store, or upload your location data. 4. Data Storage and Retention Cloud Storage: For the Online Version, your data is stored securely on Alibaba Cloud servers. We implement industry-standard encryption to protect your data during transmission and at rest. Retention Period: Logs are retained permanently to provide you with a full history of device access. Data is deleted only when: You manually delete a specific device or clear the logs. You choose to delete your account. Standalone Version: For the Standalone (Offline) version of the App, all data is stored locally on your mobile device. We have no access to, nor do we store any copies of, your local data. 5. Global Privacy Compliance GDPR (EU): We respect your "Right to be Forgotten." You may exercise your right to access, rectify, or erase your personal data via the App at any time. CCPA (USA): We do not sell your personal information to third parties. No 3rd-Party SDKs: This App does not integrate any third-party advertising, analytics, or social SDKs that track user behavior across other apps or websites. 6. Your Rights and Control You have full control over your data. Through the App settings, you can: Review and export your operation logs. Revoke shared access permissions at any time. Permanently delete your account and all associated data. 7. Contact Us If you have any questions regarding this Privacy Policy, please contact us at: KENRONE (HONG KONG) LIMITED Email: sales@kenrone.com

KENRONE: NFC battery-free lock manufacturer since 2002. 450+ employees, 23,000 m² factory in Shenzhen. ISO certified. OEM and ODM welcome. About KENRONE KENRONE, founded in 2002, has been continuously evolving in the security locking industry—from mechanical locks to electrically controlled and smart locking solutions. In recent years, we have built a battery-free lock product line (battery-free at the lock) supported by system-managed access control for industrial cabinets and facility applications. Today, we offer 20+ battery-free lock models, backed by in-house manufacturing and customization-ready delivery. ISO Certified Factory OEM & ODM Support Exported Worldwide 20+ Years Manufacturing Talk to the factory The KENRONE Engineering Team Home > About Us > Certifications Certified to International Standards Every product is manufactured and tested to international standards. ISO 9001:2015 Quality Management System Certification Authority: ACM INTERNATIONAL CERTIFICATION LIMITED Certificate Number： 91441381MADHGKBAXC ISO 14001:2015 Environmental Certification Authority: ACM INTERNATIONAL CERTIFICATION LIMITED Certificate Number： 22ACM15935R Patent Certification battery-free lock system Certification Authority: China Copyright Protection Center Certificate Number： 2025SR0067282 CE Certification European Conformity Certification Authority: ZKT Technology Co., Ltd. Certificate Number： ZKT-240528L5853C FCC Certification US Compliance Certification Authority: ZKT Technology Co., Ltd. Certificate Number： ZKT-240528L5854C ROHS Certification Materials Safety Certification Authority: ZKT Technology Co., Ltd. Certificate Number： ZKT-240528L5855C Inside the Factory Full In-House Production CNC machining, die-casting, injection molding, assembly, testing and warehousing — all under one roof. CNC-Drehmaschine CNC-Langdrehautomat 280-Tonnen-Druckgussmaschine Druckguss-Produktionslinie Spritzgussmaschine Schälmaschine Fräsmaschine Poliermaschine Schweißmanipulator Rundtakt-Gewindeschneidmaschine We have a clear advantage in the field of NFC battery-free locks KENRONE NFC battery-free locks are built for real projects. With faster unlocking, competitive factory pricing, and a growing product line, we help customers find a practical lock solution for more applications. Faster Unlocking Recent technical upgrades have greatly improved the unlocking speed. Better Value As a manufacturer, we offer competitive pricing while keeping quality under control. More NFC Lock Options Our NFC battery-free lock series continues to expand for cabinets, padlocks, lock cylinders, cable locks, and custom projects. OEM / ODM Turn Your Locking Concept Into Production Partner with a manufacturer that owns the full process — from industrial design and firmware to tooling, assembly and global shipping. Start OEM Project Resource Center Everything You Need to Specify Catalogs, certificates, downloads and guides to support your sourcing decision. Product Catalogs Battery-free lock line-up Find product types Certifications ISO, CE, FCC and RoHS documents. View Certificates APP Download using the KENRONE NFC App Get APP User Manuals Installation and operation guides. Read Manuals Video Watch our rich product videos Watch videos Discuss Your NFC Locking Project Contact KENRONE to discuss your application, access workflow, lock format, and project requirements. Request a Project Discussion

Battery-free NFC locks powered by a smartphone tap, with app-managed access, unlock records and OEM support from KENRONE. No Lock-side battery · no wiring · phone-powered NFC NFC Battery-Free Lock System for Commercial Access KENRONE combines battery-free NFC lock hardware with smartphone unlocking, app-based authorization and access records. At the tap, the phone provides both the power and the credential, so the lock itself needs no built-in battery, wiring or gateway to open. Explore Lock Products Discuss Your Locking Project 20+ Years Manufacturing 400+ Employees 100+ Export Countries 20+ R&D Engineers 23,000m² Factory Area Why upgrade Why Upgrade to an NFC Battery-Free Lock System? KENRONE NFC battery-free locks are built for real projects. With faster unlocking, competitive factory pricing, and a growing product line, we help customers find a practical lock solution for more applications. Reduce Key Management Move away from distributing, collecting, and tracking large numbers of mechanical keys. Avoid Lock-Body Battery Maintenance The lock itself does not rely on a built-in battery, helping reduce repeated battery checks across multiple locking points. Make Access More Flexible Use mobile authorization to support different users, changing tasks, and temporary access needs. Improve Traceability Unlocking actions can be managed and reviewed through the system, making access easier to follow. The hardware layer A Shared Platform Across Multiple Battery-free NFC Smart Locks Formats Choose the hardware that matches the opening; keep one battery-free NFC access approach across the project. NFC Cam Lock Cabinets, drawers and locker doors NFC Padlocks Gates, enclosures and distributed assets NFC Euro Cylinder Compatible Euro-profile door retrofits NFC Self-Storage Cylinder Lock Compatible self-storage door hardware Storage Disc Lock Storage-unit hasps and disc-lock applications NFC Bike Lock Managed bicycle and light-mobility parking NFC Key Box Controlled access to stored physical key How it works One Tap Powers and Verifies the Lock An authorized user opens the KENRONE app and places an NFC-enabled phone against the lock's NFC area. Within 1 cm—normally with the phone touching the lock—the phone energizes the electronics, the lock verifies permission and the mechanism releases. The current generation typically completes the sequence in 0.5–2 seconds under suitable phone, placement and authorization conditions. 01 Assign access — Add, change or revoke user permissions in the KENRONE app or connected management system. 02 Tap the lock — The smartphone supplies energy and an encrypted credential over NFC. 03 Verify and open — The lock verifies permission locally and releases; supported deployments retain an unlock record. inside the system What the Management Layer Does The KENRONE app and management platform support user authorization, permission changes and unlock records. Documented API and SDK resources are available for qualified integration projects. Offline unlocking can be supported by the deployment design; confirm the required authorization and synchronization workflow during specification. Authorization Layer App / management Access is assigned, changed, and removed through the App or management system — across different users, tasks, and temporary needs. Records Layer Traceability Unlocking events can be recorded, managed, and reviewed, so access across many locks and users stays easier to follow. Integration Layer API & SDK An open platform with documented API and SDK, so integrators and OEM partners can connect the locking layer into their own systems. Open integration Manufactured for Integration and OEM Projects KENRONE has worked in locking products since 2002 and has focused on battery-free NFC locks since 2020. Product design, manufacturing, assembly and testing are supported from our Huizhou facility. We work with lock brands, cabinet and locker manufacturers, integrators and project buyers on standard products and qualified OEM/ODM programs. For integrators & OEM // open integration platform API documented endpoints SDK for app & system integration connect → your own management platform // no closed-app workaround Solutions Where NFC Powered Locks Fit NFC battery-free locking is especially useful where access needs to be managed across multiple locks, multiple users, or multiple locations. Learn more about the solution Cabinet Locking Learn More Smart Locker Locking Learn More Self-Storage Doors Learn More Residential Properties Learn More Secure Storage Products Learn More Server Cabinets Locking Learn More File Cabinet Locking Learn More Shared Locker Locking Learn More Choosing a method Mechanical Locks, Battery-Powered Smart Locks, or NFC Battery-Free Locks? Different locking methods solve different problems. The right choice depends on how many locks you manage, how often access changes, and how much maintenance your project can accept. Comparison term Mechanical Locks Battery-Powered Smart Locks NFC Battery-Free Locks Better for Simple use Feature-rich smart access Commercial low-maintenance digital locking Unlock records No Depends on system Can be supported Digital authorization No Usually yes Yes Battery maintenance None Required No battery inside the lock Key management Higher Lower Lower Lock-body battery No Yes No Unlocking Physical key App / code / card / fingerprint Smartphone NFC Why KENRONE Discover KENRONE. Choose with Confidence. KENRONE has years of experience in locking products, from mechanical locks to electronic and battery-free systems. We focus on making NFC locking practical for real commercial projects, not just adding smart features for the sake of it. Locking Product Experience Built on long-term work in mechanical, electronic, and battery-free locking products. Focus on NFC Battery-Free Locking We develop locks and related products around a clear low-maintenance direction. In-House Development and Production Key design, manufacturing, and quality processes are managed within KENRONE. Project-Oriented Support We help customers match lock formats, applications, and access workflows more clearly. About Us clear advantage We have a Clear Advantage in the field of NFC battery-free locks KENRONE NFC battery-free locks are built for real projects. With faster unlocking, competitive factory pricing, and a growing product line, we help customers find a practical lock solution for more applications. Faster Unlocking Recent technical upgrades have greatly improved the unlocking speed. Better Value As a manufacturer, we offer competitive pricing while keeping quality under control. More NFC Lock Options Our NFC battery-free lock series continues to expand for cabinets, padlocks, lock cylinders, cable locks, and custom projects. News & Blog Related Resources Start a project Specify the Right Battery-Free NFC Lock for Your Project Send the opening type, door or panel dimensions, access workflow, expected quantity range and integration needs. KENRONE will recommend the next compatibility check. Discuss Your Locking Project Frequently asked questions Does the lock contain a battery? Does it need Wi-Fi to open? How close must the phone be? How fast does it open? Can it connect to our platform? Are you a manufacturer? Or are you a distributor or trading company?

Drop-in NFC cam lock for cabinets, lockers, and enclosures. Tap a phone to unlock — no batteries inside, no keys to copy, no shared codes to leak. Fits standard 19mm and 22mm cam lock cutouts. Built for office furniture, IT cabinets, and managed lockers. Battery-Free NFC Smart Cam Lock Factory Battery-Free NFC Keyless Cam Lock for Cabinets Upgrades Retrofit any keyed cabinet to NFC access. No wiring. No batteries. No more lost keys. ✓ Zero Battery Inside — Powered by Your Phone ✓ Tap-to-Unlock with Any NFC Smartphone ✓ Drop-In Replacement for Standard Cam Locks Request a Compatibility Review Home / NFC Cam Lock / Cam Lock Type Choose the Right NFC Cam Lock Format for Your Application round knob cam lock wing knob cam lock thumb turn cam lock replace the old cam lock When Traditional Master Cam Locks Start to Feel Limiting Keyed cam locks Simple and affordable — until you're juggling dozens of keys across multiple Master-key cam locks Fewer keys to carry — but every lost key still means rekeying the entire system. Combination cam locks Goes keyless — but sharing access, rotating codes, and tracking usage are still a hassle. Need keyless access, centralized control, and zero battery upkeep? That's exactly what NFC battery-free cam locks are built for. Use a True Keyless Cam Lock Using a Keyless Cam Lock Doesn't Mean Using a Combination Cam Lock Explore NFC Battery-Free Lock System Most "keyless" cam locks just replace the key with a dial — trading one inconvenience for another. We took a different route. Tap your phone on the lock — it unlocks. The same tap also powers it. No dial. No code. No battery. Management Centralized Management — One Cabinet or One Hundred, Same Cam Lock, Smarter System. For one cabinet, it's a 5-minute upgrade from a mechanical cam lock. For a hundred, it becomes a centralized NFC system — every permission, every unlock, every user, fully tracked from the cloud. Workflow A Simple Workflow for Users and Administrators For Administrators Add users Assign Cam lock access Adjust permissions View unlock logs For Users Open the App Tap the phone to the Cam lock Unlock with granted permission Complete the task Solution Where NFC Keyless Cam Locks Fit Storage cabinets Utility boxes Office cabinets vending machine School Lockers Comparison Keyed Cam Lock, Master-Keyed, Combination Cam Lock, or NFC Cam Lock? Every cam lock solves the same job — keeping a cabinet closed. What separates them is what happens next: who can open it, how access is tracked, and how much work it takes to manage at scale. Here's how the four most common options stack up — and where NFC battery-free cam locks fit in. Comparison Keyed Cam Lock Master-Key Cam Lock Combination Cam Lock NFC Battery-Free Cam Lock Unlocking Method Mechanical Key Standard Key + Master Key Combination Dial Smartphone NFC Tap Keyless No No Yes Yes Multi-Lock Management Basic Easier than standard keys Basic Built for centralized management Access Records None None Usually none Supported via cloud system Battery Inside Lock None None Usually none None Best For Simple single cabinets Multi-cabinet setups still using keys Small-scale keyless needs Commercial cabinets & digital upgrade projects Looking for a battery-free NFC cam lock for cabinet upgrades or managed locking projects? Contact KENRONE to discuss your cabinet type and project requirements. Request a Project Discussion More NFC Battery-free Smart Lock Products NFC Storage unit Cylinder Lock NFC Padlock NFC Euro Cylinder Lock NFC Key Box NFC Bike Lock NFC Storage Padlock News & Blog Related Resources

Discover NFC battery-free lock system solutions from KENRONE. Designed for cabinets, equipment, and distributed assets, our locks support phone unlocking, access management, and unlock records. Solutions One battery-free platform. Every locking scenario. Start with the opening and access workflow—not a feature list. Choose the application below to see the compatible lock layer, required measurements and management boundary. Explore Solutions Talk to the factory / Solutions / Self Storage Access Control Self Storage Solution Give tenants keyless access to their unit and manage the whole facility remotely — grant, transfer or revoke access without visiting the site or re-keying. Cabinet Locking Cabinet Locking Solution Secure high-value infrastructure and sensitive documents with keyless, audited access — no drilling for power, no cabling. Server Cabinet Locking Protect data-centre racks and IT infrastructure with per-user access logs. Electrical Cabinet Locking Restrict power-distribution and control panels to authorized technicians. File Cabinet Locking Control who opens document and record storage, with a full audit trail. Locker Locking Locker Locking Solution Flexible access for personal and communal lockers — assign a locker for a term, or rotate it between users on demand. Assigned / Private Locker One user, one locker — for schools, gyms and workplaces. Shared / Rotating Locker Multi-user access for gyms and communal spaces, freed and reassigned instantly. Explore solutions Purpose-built for how spaces are actually secured Each solution runs on the same NFC lock family and the same management app. Self-storage Electrical cabinets File cabinets School lockers Gym lockers Employee lockers Vending machines Game consoles Server cabinets Luggage storage Mailboxes Secure cash boxes Applications Twelve places KENRONE locks go to work The same battery-free NFC platform adapts across industries and enclosures. CONTACT US Not sure which solution fits? Tell us about your cabinets, lockers or facility and we’ll recommend the right lock and workflow — OEM/ODM options available. Talk to our team OEM ODM

Battery-free NFC locks for office file cabinets. Drop-in retrofit, no re-keying on staff turnover, full access records for privacy compliance. Electronic File Cabinet Locks — Replace Office Keys With Smartphone Access Upgrade existing file cabinets to keyless, battery-free NFC access. Built for office managers, HR teams, and facilities leaders tired of managing keys, re-keying on every staff change, and wondering who opened which drawer. Talk to us See How It Works Battery in Lock None Retrofit Time < 5 min Access Record Every tap §01 FILE: PREMISE Most office filing cabinets still use a 50-year-old lock design. Walk into most offices today and the filing cabinets look almost exactly like they did in 1975. Same drawers, same flimsy tubular locks, same drawer full of mismatched keys nobody can identify. The furniture industry kept building cabinets. For the office segment, the lock industry never really caught up. What changed is everything around the cabinet — the people who use it, the documents inside it, and the rules governing how those documents must be protected. A modern office runs on staff turnover, hybrid schedules, and privacy regulations that did not exist a generation ago. The 1975 lock is no longer fit for that world. The fix is not a better key. It's the end of key chaos altogether. A "tubular pin tumbler lock" — the small round-keyed lock found on most office cabinets — was patented in 1933 and standardised in office furniture by the late 1960s. Most office filing cabinets still ship with this exact mechanism. Home > Solutions > Cabinet Locking Solution > File Cabinet Locking > §02 FILE: MECHANISM How NFC battery-free file cabinet locks work. The lock has no internal battery. When an authorized smartphone is tapped against the lock, the phone's NFC field provides the power needed to verify credentials and release the lock — in one to two seconds. STEP 01 No battery in the lock Cabinets installed in a conference room or a back-office corridor don't require routine battery maintenance. STEP 02 No keys to lose or copy Access is granted, revoked, or reassigned in the app — no locksmith, no re-keying. STEP 03 Every unlock is recorded Each access event captures the time, the user, and the specific cabinet that was opened. Two app versions A cloud-connected version syncs access records to a central administrator dashboard in real time. A fully offline version keeps records on the user's phone and the administrator's device — ideal where network independence or data residency matter. Both versions support the same unlock and access-record functions. NFC = Near Field Communication. The phone's antenna inductively transfers a small amount of energy to the lock's antenna at close range — enough to power the lock's mechanism for one unlock action. §03 FILE: PAIN POINTS Five pain points NFC file cabinet locks solve. Each one is a daily-life problem in offices that run on mechanical cabinet keys. They compound. The lock is the first place to fix it. 01 Nobody can say where the keys are. After ten years of operation, a typical office has more keys than cabinets and no record of who holds what. Borrowing keys becomes a daily social activity. NFC removes the keys entirely. 02 Every departing employee is a security hole. When a staff member leaves with a key — or a copy of one — the only safe response is to re-key. Most offices skip this step and accept the risk. With NFC, revoking access takes seconds and changes nothing about the hardware. 03 Shared cabinets have no real accountability. Five people on a team share a cabinet, five people have keys, and nobody can say who opened it last Thursday. NFC ties every unlock to a named user, automatically. 04 Privacy regulations are tightening every year. Law firms, medical practices, HR departments, and insurance offices face direct regulatory pressure on how personal data is physically secured. NFC locks produce the access records those frameworks expect. 05 The hidden cost of locksmiths adds up. Replacing a cabinet lock typically costs $60–$200 in parts and labor; cutting a duplicate key adds another $5–$20.1 Across fifty cabinets over a few years, this becomes a budget line nobody tracks but everybody pays. Yelp Cost Guide for cabinet lock services and Fixr Locksmith Service Cost Guide — see footnotes at end of page. §04 FILE: COMPLIANCE Privacy compliance for document storage. Modern privacy frameworks require that personal data — whether client records, patient files, employee documents, or financial paperwork — be protected against unauthorized physical access. The cabinet that holds the paper is part of the regulated environment. NFC battery-free file cabinet locks capture three pieces of information at every access event: When Timestamp Who Authorized user Which Cabinet ID These records form the foundation of physical access documentation expected by privacy and information-security frameworks worldwide. International standards (apply broadly across regions): ISO/IEC 27001:2022 Annex A.7 Physical controls, including access to information processing facilities and assets. ISO/IEC 27701:2019 Privacy information management system extending ISO/IEC 27001 with privacy-specific controls Regional examples — KENRONE access records support documentation under your applicable jurisdiction's framework, including: Europe & UK GDPR Article 32, UK GDPR North America HIPAA 45 CFR §164.530(c) (paper PHI in filing cabinets; for cabinets storing electronic media, §164.310(d) Device and Media Controls also applies), CCPA (Cal. Civ. Code §1798.150), PIPEDA Principle 7 — the Canadian Office of the Privacy Commissioner specifically identifies locked filing cabinets as a recommended physical safeguard. Asia-Pacific Singapore Personal Data Protection Act (PDPA), Korea Personal Information Protection Act (PIPA), Japan Act on the Protection of Personal Information (APPI), Australia Privacy Act 1988. Middle East UAE Personal Data Protection Law (Federal Decree-Law No. 45/2021), Saudi Arabia Personal Data Protection Law (PDPL). The lock alone does not make an organization compliant — compliance is a matter of policy, training, and process. But the lock closes the most common gap in physical privacy controls: the missing access record. Official citations for each framework appear in the footnote section at the bottom of this page, linked to the primary source (eCFR, Office of the Privacy Commissioner of Canada, etc.). §05 FILE: RETROFIT Drop-in retrofit for existing file cabinets. Many office filing cabinets use standard 19mm or 22mm cam-lock cutouts, including common vertical, lateral, 2-drawer, 4-drawer, and mobile pedestal cabinets. NFC battery-free cam locks can retrofit these cutouts directly. For gang-lock, proprietary, recessed, or non-standard mechanisms, send photos or cabinet model details for compatibility review. No drilling, no wiring, no replacement furniture, no procurement cycle. Typical Retrofit Applications 2-drawer and 4-drawer office cabinets Mobile pedestal cabinets under desks Lateral file storage walls in records rooms Shared office storage cabinets in open-plan environments A typical retrofit takes under five minutes per lock with a standard screwdriver. Existing keyed locks can be swapped one cabinet at a time, on the office team's own schedule — no business interruption. Standard cam lock cutouts: 19mm and 22mm diameter . KENRONE NFC cam locks ship in both sizes to match virtually all commercial filing cabinets. §06 FILE: TURNOVER Staff turnover, re-keying, and the case for keyless. People change. The lock doesn't need to. In U.S. workplaces, average annual voluntary turnover is around 13%, with total separations (including role changes and involuntary exits) substantially higher.6 In an office of fifty people, that's six to fifteen transitions every year. Each transition raises the same question: what about the keys? The traditional answer involves a locksmith, a purchase order, and an afternoon of disruption — repeated for every cabinet that staff member had access to. Most offices choose to skip this step and quietly accept the risk that copied keys remain in circulation. NFC battery-free locks change the question. When an employee joins, access is granted in the app. When they leave, access is revoked in the app. The cabinet is never touched. The lock is never replaced. The hardware lifecycle finally matches the people lifecycle . U.S. Bureau of Labor Statistics (JOLTS); SHRM and Mercer 2024–2025 turnover benchmarks. Not sure whether your cabinet can be retrofitted? Send us a photo of the existing lock, cabinet brand, or drawer type. We will confirm whether a standard NFC cam lock fits. Check Filing Cabinet Compatibility §07 FILE: COMPARISON NFC battery-free vs. mechanical vs. battery-powered smart lock. The same comparison your purchasing committee will eventually make. Run through it now. Attribute Mechanical Lock Battery-Powered Smart Lock NFC Battery-Free Lock Unlock method Physical key App / RFID / keypad Smartphone NFC tap Key management overhead High Low None Battery in lock None Required (12–24 mo replacement) None Wiring needed None Sometimes None Access records None Yes (when battery alive) Yes, every access Lock change on turnover Re-key required Revoke in software Revoke in software Suitable for office use Mid Mid (battery hassle) High 5-year total cost Mid + locksmith High (battery + service) Low §08 FILE: SPECIFICATIONS Specifications. The hardware. Documentation available on request, including datasheet PDF, installation guide, and API/SDK reference for integrators. NFC Battery-Free Cam Lock KR-NFC-CL Certifications CE · FCC · RoHS Integration API + SDK available Offline operation Yes (offline app version) Users per lock Not limited Phone support Android & iOS NFC Unlock time 1–2 seconds Operating temp −20°C to 65°C Body material Zinc alloy Body diameter 19mm / 22mm ↓ Datasheet (PDF) → NFC Battery-Free Cam Lock product page §09 FILE: SUPPLIER Why KENRONE. About KENRONE : We have manufactured locks for over two decades. NFC battery-free locks are not a side project — they are the direction we are building our business around. 01 Factory-direct. No layers between the production line and your project. Pricing reflects what the hardware actually costs to build. 02 CE, FCC, and RoHS certified. Documentation available on request. 03 Flexible order sizes. From pilot quantities to large rollouts, MOQ is set per project, not per catalog. 04 OEM and ODM ready. Custom housing, branding, mechanical interfaces, and firmware-level adjustments are part of our regular workflow. 05 Open integration platform. Documented APIs and SDKs let you integrate unlock, credential management, and access records into facility management software, HR platforms, or custom mobile apps. 06 Complete English documentation. Datasheets, installation guides, and integration notes available for every product line. §10 · TALK TO US Tell us about the cabinets you need to secure. We'll respond with the specifications, samples, or quote your project actually needs. sales@kenrone.com WhatsApp: +86 153 6019 3224 Contact Us * Name * Email * Phone * What are you looking for ? - Select - Message Submit §11 FILE: FAQ Frequently asked questions. Will NFC locks fit standard office filing cabinets ? Yes. The cam lock form factor fits the standard 19mm and 22mm cutouts used by virtually all commercial filing cabinets — vertical, lateral, 2-drawer, 4-drawer, and pedestal. No drilling or cabinet modification is required. Do the locks need batteries? No. The lock has no internal battery. Power is provided by the smartphone's NFC field during the unlock action. Do the locks need to be connected to the internet, Wi-Fi, or any wiring? No. The locks themselves operate fully offline and don't require Wi-Fi, Ethernet, or any wiring. We offer two app versions: a cloud-connected version for centralized access records and remote credential management, and a fully offline version for environments where data residency or network independence matter. Both versions support the same unlock and access-record functions. How does an employee get access to a cabinet? The office administrator grants access through the app. The employee installs the app on their NFC-enabled phone, receives the credential, and can unlock authorized cabinets with a tap. What happens when an employee leaves? Access is revoked in the app. The hardware is not touched. The departing employee's phone can no longer unlock any cabinet they previously had access to. Which phones work with the lock? Any NFC-enabled Android or iOS smartphone from the past several generations. Model compatibility is documented on the product datasheet. Is the access record private? Access records contain the user, time, and lock identifier. Records are managed by the customer's own administrator, not shared with third parties. The records support privacy compliance documentation under frameworks such as GDPR Art. 32, HIPAA §164.530(c), CCPA, and PIPEDA Principle 7. How many people can be authorized for one cabinet? There is no fixed per-lock limit. Different access levels can be assigned to different users — for example, full department access versus single-cabinet access. Do you provide API or SDK for integration with our existing systems? Yes. Our NFC lock platform provides documented APIs and SDKs for integration with facility management software, HR platforms, identity providers, and custom applications. Integration documentation is available on request. What is the MOQ? MOQ is set per project. Pilot orders for office trials and large rollouts for multi-site businesses are both accommodated. Do you support OEM and ODM? Yes. Custom housings, branding, mechanical interfaces, and firmware-level adjustments are part of our standard workflow. References & Footnotes Locksmith service costs_ Yelp Cost Guide \ Fixr Locksmith Cost Guide ISO/IEC 27001:2022 + ISO/IEC 27701:2019 — International information security and privacy management standards. ISO/IEC 27001:2022 consolidated previous physical security controls into Annex A.7. ISO/IEC 27701 extends 27001 with privacy-specific controls aligned with GDPR requirements. EU & UK privacy frameworks — GDPR Regulation (EU) 2016/679, Article 32 ("Security of processing"). UK GDPR retains the same Article 32 text under post-Brexit UK law (Data Protection Act 2018 as amended) North America privacy frameworks — HIPAA Privacy Rule 45 CFR §164.530(c) "Safeguards" (per U.S. HHS guidance, applies to PHI in any form including paper records). California Consumer Privacy Act, Cal. Civ. Code §1798.150 (reasonable security procedures and practices). PIPEDA Schedule 1, Clause 4.7 — the Canadian Office of the Privacy Commissioner's official guidance lists "locked filing cabinets" as an example of an appropriate physical safeguard. Asia-Pacific privacy frameworks — Singapore PDPA 2012 (as amended); Korea Personal Information Protection Act (PIPA, 2011 as amended 2020); Japan Act on the Protection of Personal Information (APPI, 2003 as amended 2022); Australia Privacy Act 1988 (as amended). All include physical-safeguard requirements for personal information processed and stored on premises. Middle East privacy frameworks — UAE Federal Decree-Law No. 45/2021 on the Protection of Personal Data (in force 2022). Saudi Arabia Personal Data Protection Law (PDPL, issued 2021, effective 2023). Both prescribe technical and organizational measures protecting personal data including against unauthorized physical access. Workforce turnover data — U.S. Bureau of Labor Statistics (JOLTS); SHRM and Mercer turnover benchmarks (2024–2025).

Battery-free NFC locks for server cabinets, network closets, and remote IT sites. Keyless access, audit logs, offline operation, and API integration. Server Cabinet Access Control with Battery-Free NFC Locks Secure your network closets, IT rooms, branch office cabinets, and remote site enclosures — or integrate the same NFC platform into the cabinets you manufacture. Cam locks for small-form-factor cabinets, swing handles for 19" racks. No physical keys, no in-lock batteries, every authorized unlock event is recorded. Talk to us See How It Works Battery in Lock None Wiring Required None Access Record Every tap Home > Solutions > Cabinet Locking Solution > Server Cabinet Locking > §01 PREMISE Why Server Cabinet Access Needs to Move Beyond Keys Most IT teams still secure their server cabinets, network closets, and remote site enclosures with mechanical keys. It works — until it doesn't. A field engineer gets dispatched to a remote site at 2 a.m. and discovers the cabinet key is in a colleague's drawer two cities away. An auditor asks for 90 days of physical access logs and the only answer is a paper sign-in sheet. A contractor leaves the company, and nobody is sure how many copies of the master key are still in circulation. These are not edge cases. They are the daily reality of managing cabinet access across distributed IT environments. Replacing a single lock typically runs $60–$200 in parts and labor1; across 30–50 cabinets the bill reaches the low thousands. Key management quietly absorbs ops time every week. And none of it produces the kind of access record that modern security frameworks expect. NFC battery-free cabinet locks solve these problems at the hardware layer — no keys, no batteries, and every authorized unlock event recorded. The cabinet itself is the last "key-and-lock" relic in environments where every other access decision — login, network, file, application — moved to identity-based control years ago. §02 MECHANISM How NFC Battery-Free Server Cabinet Locks Work The lock itself has no battery. When an authorized smartphone is tapped against the lock, the phone's NFC field provides the small amount of power needed to verify credentials and release the lock — in one to two seconds. The same platform applies to cam lock variants (small-form-factor cabinets, side panels, patch enclosures) and swing handle variants (full-height 19" data center racks). STEP 01 No battery to replace Cabinets at remote sites, edge nodes, or inside data halls never need maintenance trips just to swap cells. STEP 02 No keys to manage Access rights are granted, revoked, and reassigned through the app, instantly. STEP 03 Every unlock is recorded Each access event captures the time, the lock, and the identity of the user who opened it. Two app versions A cloud-connected version syncs access records to a central administrator dashboard in real time. A fully offline version keeps records on the user's phone and the administrator's device — for air-gapped IT environments or sites where network independence is a requirement. The smartphone becomes the credential and the power source at the same time. The lock stays passive, sealed, and ready. §03 PAIN POINTS Five Pain Points NFC Server Cabinet Locks Solve Each one is a daily-life problem in distributed IT environments that run on mechanical cabinet keys. 01 Keys travel slower than tickets. Remote access work stalls when physical keys are held by the wrong person or stored at the wrong site. NFC removes key hand off from the workflow — authorized users can open the cabinet when they arrive. 02 Audit logs end at the cabinet door. Paper sign-in sheets rarely prove who opened a specific cabinet at a specific time. NFC ties each authorized unlock to a named user, timestamp, and lock ID. 03 Master keys outlive employees. Shared keys continue circulating after role changes, contractor exits, and team turnover. NFC access can be revoked in the app without touching the hardware. 04 Cabinet wiring is rarely an option. Network closets and remote site cabinets seldom have spare conduit runs for an electric strike. NFC locks need no wiring, no PoE, no electrician on the ticket. 05 Battery logistics defeat smart lock economics. Battery-powered smart locks turn into a quarterly logistics problem once you have 40 cabinets across 12 sites. Battery-free locks remove the entire maintenance category. These five pain points compound in distributed IT environments. Centralized data centers have on-site staff to mitigate most of them; branch offices, edge nodes, and remote sites do not. §04 COMPLIANCE Server Cabinet Access Logs and International Security Frameworks Every cabinet unlock is captured with three pieces of information: when the access occurred, who opened it, and which cabinet. These records can support the physical access control documentation expected by many information-security frameworks. International standards · apply broadly across regions ISO/IEC 27001:2022 Annex A.7 Physical controls — access to information processing facilities and assets ISO/IEC 27002:2022 Companion implementation guidance for ISO/IEC 27001 controls. PCI-DSS Requirement 9 Global payment-industry standard requiring physical access to be controlled and logged. Regional examples · supports documentation under your applicable jurisdiction's framework Europe & UK EU NIS2 Directive ENISA guidelines UK Cyber Essentials GDPR Article 32 North America SOC 2 CC6.4 (AICPA) NIST SP 800-53 PE-3 CSA standards (Canada) Asia-Pacific Singapore Cybersecurity Act + PDPA Korea K-ISMS Japan ISMAP Australia ISM Middle East UAE NESA standards Saudi Arabia NCA ECC The NFC lock alone does not make an organization compliant — compliance is a matter of policy, process, training, and the broader access control program. But it helps close one of the most common gaps in cabinet-level physical access control: the missing log . Two-layer structure: lead with international standards (ISO/IEC, PCI-DSS) as primary; regional regulations as examples. A reader from any jurisdiction finds their own framework in the regional grid. §05 RETROFIT Drop-In Retrofit for Server, Network, and IT Cabinets Many server and network cabinets — particularly small-form-factor cabinets in branch offices, network closet doors, patch panel enclosures, and side panels of larger cabinets — use standard 19mm or 22mm cam lock cutouts. NFC battery-free cam locks fit these existing cutouts directly. No cabinet modification, no wiring, no new specifications to push through procurement. Typical Retrofit Applications Network closet doors and side panels Small-form-factor server cabinets in branch offices Patch panel enclosures and structured cabling cabinets IT auxiliary cabinets — UPS housings, KVM stations, console drawers Outdoor and semi-outdoor IT enclosures at remote sites For full-height 19" data center racks Most full-height racks use swing handle hardware rather than cam locks. The same NFC battery-free access platform extends through our NFC swing handle product line, with identical credential management, access records, and administrator workflow across cam lock and swing handle deployments. A typical cam lock retrofit takes under five minutes per lock with a standard screwdriver. Existing keyed locks can be swapped one cabinet at a time, on the operations team's own schedule. Standard cam lock cutouts: 19mm and 22mm diameter . Swing handle variant fits standard 19" rack handle cutouts. Other form factors available on request. Need to confirm fit? Send us a photo of your cabinet lock cutout or rack handle, and we will recommend the right NFC cam lock or swing handle variant. Check Cabinet Compatibility §06 LAST MILE The Last Mile of Your Zero-Trust Posture Modern IT security is built on a layered model — identity, network, endpoint, application, data. Most organizations have spent the last several years investing heavily across these layers: IAM platforms, MFA enforcement, network microsegmentation, conditional access policies, EDR agents, SIEM and SOAR consolidation. The principle running through it all is the same: never trust by default, verify continuously, log everything Then the field engineer walks up to the cabinet that hosts all of this — and opens it with a key that's been duplicated three times, that lives in a desk drawer when not in use, and that produces no record of who used it last. The physical access layer is where zero-trust architecture quietly stops Not because nobody noticed — but because there has not been a hardware option that fits the operational reality: distributed cabinets, no spare cabling, no battery maintenance budget, no on-site IT staff at most locations. NFC battery-free locks close this gap. Every cabinet unlock is tied to a verified, currently-authorized identity. Every access event is logged. Authorization revocation propagates instantly. The same identity discipline you've built into your IAM stack now extends to the steel door that physically guards your switches, routers, patch panels, and edge compute. For server cabinets, it's the zero-trust last-mile argument §07 LIMITS Server Cabinet Lock Operating Range and Procurement Notes We say what the locks are built for, and what they are not. Suitable for Indoor and semi-outdoor IT environments Branch office network closets Edge computing nodes Remote site cabinets Patch panel and structured cabling rooms Small-form-factor server cabinets in non-extreme climates Not currently rated for Tier 4 / NCPI-grade primary data center physical security. Page covers distributed IT, not Tier-4 mantraps/biometrics. Hazardous-area classifications (ATEX, Class I Div 1) Arctic / extreme cold below −20°C Operating temperature −20°C to 65°C. Ingress protection IP65 (cam lock variant; swing handle rating per project). For applications outside these ranges, talk to us before specifying. most smart-lock vendors are silent on this. Saying it explicitly avoids a wasted RFP cycle later. §08 KEY DIFFERENCES Key Differences for Server Cabinet Use For a full attribute-by-attribute comparison across all cabinet lock types, see our Cabinet Locking Solutions overview → . For server cabinet applications specifically, the differences that matter most: Attribute Mechanical Battery-Powered Smart NFC Battery-Free Integration with IAM / ITSM / SIEM No Vendor-specific API + SDK Suitable for distributed sites Mid Low (battery logistics) High Cabinet access events recorded None Yes (battery dependent) Yes, every access Battery in lock None Required (12–24 mo) None The remaining attributes — key management overhead, wiring requirements, single-user binding, 5-year cost of ownership — follow the same pattern across all battery-free NFC applications. See the Cabinet Locking Solutions overview → for the complete comparison. §09 SPECIFICATIONS Specifications. The hardware. Documentation available on request, including datasheet PDF, installation guide, and API/SDK reference for integrators. NFC Battery-Free Cam Lock KR-NFC-CL Certifications CE · FCC · RoHS Integration API + SDK available Offline operation Yes (offline app version) Users per lock Not limited Phone support Android & iOS NFC Unlock time 1–2 seconds Operating temp −20°C to 65°C Body material Zinc alloy Body diameter 19mm / 22mm ↓ Datasheet (PDF) → NFC Battery-Free Cam Lock product page §10 SUPPLIER Why KENRONE. About KENRONE : We have manufactured locks for over two decades, including projects across distributed IT, branch office networking, edge computing, and remote site infrastructure environments. 01 Factory-direct. No layers between the production line and your project. Pricing reflects what the hardware actually costs to build. 02 CE, FCC, and RoHS certified. Documentation available on request. 03 Flexible order sizes. From pilot quantities to large rollouts, MOQ is set per project, not per catalog. 04 OEM and ODM ready. Custom housing, branding, mechanical interfaces, and firmware-level adjustments are part of our regular workflow. 05 Open integration platform. Documented APIs and SDKs let you integrate unlock, credential management, and access records into facility management software, HR platforms, or custom mobile apps. 06 Complete English documentation. Datasheets, installation guides, and integration notes available for every product line. §11 · TALK TO US Tell us about the cabinets you need to secure. We'll respond with the specifications, samples, or quote your project actually needs. sales@kenrone.com WhatsApp: +86 153 6019 3224 Contact Us * Name * Email * Phone * What are you looking for ? - Select - Message Submit §12 FILE: FAQ Frequently asked questions. Do these locks need batteries? No. The lock has no internal battery. Power is provided by the smartphone's NFC field during the unlock action. Which phones work with the lock? Any NFC-enabled Android or iOS smartphone from the past several generations. Specific model compatibility is documented on the product datasheet. Do the locks need internet, Wi-Fi, or wiring? No. The locks operate fully offline and require no Wi-Fi, Ethernet, or wiring. Two app versions are offered: a cloud-connected version for centralized access records and remote credential management, and a fully offline version for air-gapped environments. What happens if a user's phone runs out of battery? Multiple authorized users can be configured per cabinet, so there is always more than one phone capable of opening any given lock. For single-user cabinets, we recommend authorizing a backup user as standard practice. Can a lock be assigned to a single specific worker? Yes. Each lock can be configured in single-user mode, where the lock is bound to one named worker who holds the credential for that specific cabinet. How many users can be authorized per lock? There is no fixed per-lock limit. Authorization is managed through the app and can be granted, revoked, or scheduled per user, per cabinet, per site, or per time-of-day. Does the lock fit standard cabinet hardware cutouts? Cam lock variants: yes, standard 19mm and 22mm cam lock cutouts. Swing handle variants: yes, standard 19" rack swing handle cutouts on front and rear doors. Custom cutouts available for proprietary handle systems. How is access recorded? Each unlock is captured with timestamp, user identity, and lock ID. These records can help support physical access documentation requirements under information-security frameworks (see §04 above for the framework reference). Do you provide API or SDK for integration with our IAM, ITSM, or SIEM systems? Yes. Our NFC lock platform provides documented APIs and SDKs for integration with IAM platforms, IT service management tools, SIEM consoles, identity providers, and custom applications. Integration documentation is available on request. We're a cabinet manufacturer — how does OEM integration work? Standard mechanical interfaces (19mm/22mm cam lock cutouts, swing handle cutouts) integrate directly into existing cabinet designs. Custom housings, branding, mechanical interfaces, and firmware adjustments are part of our regular production-line workflow. Our engineering team works directly with manufacturer assembly and product teams during specification, prototype validation, and production-run phases. What is the MOQ for a project? MOQ is set per project rather than per catalog. Pilot orders, large rollouts, and ongoing cabinet-manufacturer supply contracts are all accommodated. Are the locks certified for international use? The product line carries CE, FCC, and RoHS certifications. Certificates are available on request. References & Footnotes Locksmith service costs_ Yelp Cost Guide \ Fixr Locksmith Cost Guide ISO/IEC 27001:2022 Annex A.7 + ISO/IEC 27002:2022.The 2022 revision consolidated previous A.11 controls into Annex A.7, covering physical security perimeters, entry controls, and protection of equipment. PCI-DSS v4.0 Requirement 9.Global payment-industry standard requiring physical access controls and logged retention. North America information-security frameworks.SOC 2 Trust Services Criteria CC6.4 (AICPA), NIST SP 800-53 Rev. 5 PE-3 (U.S. federal / FedRAMP), CSA standards (Canada).、 Europe & UK information-security frameworks.EU NIS2 Directive 2022/2555, ENISA guidelines, UK Cyber Essentials, GDPR Article 32. Asia-Pacific information-security frameworks. Singapore Cybersecurity Act + PDPA; Korea K-ISMS (KISA); Japan ISMAP; Australia Information Security Manual (ACSC). Middle East information-security frameworks.UAE NESA Information Assurance Standards; Saudi Arabia NCA Essential Cybersecurity Controls (ECC-1:2018).

Battery-free NFC smart lock box with app-based authorization and full per-user unlock logs. IP65 outdoor, smartphone tap unlock, no PINs to share or rotate. NFC Smart Key Lock Box – Battery-Free, Keyless, App-Managed Key Safe A wall-mountable NFC smart key safe (also known as a smart lockbox or smart key box) that opens with a single smartphone tap. No internal battery, no shared combination codes, no copied keys. Authorized users are managed through the NFC app, and every open event is recorded for full access transparency. Smartphone NFC unlocking — no key safe battery to charge or replace App-based authorization for multiple users, with time-bound access for guests, cleaners, and agents Complete unlock records for every authorized user IP65 weather-rated zinc alloy and ABS construction for outdoor wall mounting Contact us Home / NFC Key Lock Box / Why combination and battery key safes keep letting hosts down. Most key safes in use today fall into one of two camps — mechanical combination lockboxes or battery-powered keypad lockboxes. Both come with practical issues that show up daily for Airbnb hosts, property managers, and real estate agents. The NFC smart key safe is built to remove all four issues in one product — no PIN to share, no battery to die, every open event logged, and a flush surface with no keypad to wear out. 01 / Shared Codes get shared, and rarely change. A combination PIN handed to one guest is just as easy to forward to the next person, and most hosts never reset it between bookings. 02 / Drained Batteries die at the worst time. Smart keypads typically run on AA or AAA cells that drain in months, leaving guests locked out and review scores at risk. 03 / Blind No record of who opened the box. Mechanical and basic keypad lockboxes give no visibility into when, or by whom, the box was accessed. 04 / Weathered Keypads weather poorly. Outdoor exposure wears down dials and buttons faster than the rest of the housing — and failure usually means a service call. Opened by a Smartphone Tap — No Battery Inside the Key Lock Box The lock uses NFC micro-energy harvesting. When an authorized smartphone is held against the NFC tap area on the front of the key safe, the phone itself supplies the small amount of energy needed to verify access and release the lock. There is no internal cell to recharge, no batteries to replace, and nothing to fail when the key safe sits unused for months between guests, or through cold weather. 0 Batteries · Cells · Cables Manage who can open it, and see every open event. Every authorized user is added through the NFC app. The same app handles authorization and access records for both individual hosts and multi-property managers. Authorization management Add or remove authorized users in seconds Time-bound access for stays, visits, or service windows Revoke access instantly when a guest checks out No PIN codes to share, rotate, or recover Unlock records Full log of every open event, by user and timestamp Accountability across cleaners, agents, and maintenance A reliable record for handovers and insurance follow-up How It Works From tap to open in seconds. Step 01 Authorize the user Owner adds an authorized user via the app — one-time, scheduled, or time-bound. Step 02 Open the app User opens the NFC app on the authorized phone. Step 03 Hold to the key safe Phone is held against the NFC tap area on the front of the lock. Step 04 NFC powers + verifies Phone supplies energy; the lock reads the authorization token. Step 05 Door releases Retrieve or return the keys, fobs, or access cards inside. Step 06 Logged automatically The open event is recorded against that user, with timestamp. Where the NFC Smart Key Safe Fits Built for any situation where keys, fobs, or access cards need to change hands without meeting in person — and where the owner still wants visibility into who is opening the box. With a 180 × 220 mm front face and 65 mm depth, the internal space is sized for multiple keys, fobs, and cards rather than a single key handover. Explore NFC Battery-Free Lock System Short-term rentals Self check-in for Airbnb and vacation rentals without sharing codes or coordinating arrival times. Property management One access point for cleaners, maintenance, and inspectors across multiple units in a portfolio. Real estate lockbox Agent and buyer access for showings, with logged entry records for accountability. Family & shared homes Keyless backup access for family members, roommates, and trusted visitors — no spare keys to lose. Service personnel Time-bound entry for dog walkers, cleaners, deliveries, and contractors. Emergency & spare A secure outdoor location for backup house, car, gate, and garage keys, with a clear record of any use. Combination, keypad, Bluetooth, or NFC? A side-by-side look at how the NFC smart key safe stacks up against the three lockbox formats it replaces. Comparison Combination Lockbox Keypad Smart Lockbox Bluetooth Smart Lockbox NFC Smart Key Safe Best suited for Casual key sharing Single-property hosts Tech-equipped hosts Hosts and managers wanting battery-free smart access with full records Maintenance Low Ongoing battery changes Ongoing battery changes Practically none Outdoor durability Medium Medium (keypad wears) Medium High (no battery, no keypad) Time-bound access No Sometimes Yes Yes Unlock records None Limited Yes Yes, per user Multi-user access Single shared code Multiple PINs App users App users, per-person logs Code / key sharing risk High (shared PIN) Medium (PINs leak) Lower (app-managed) Lowest (per-user authorization) Internal battery None Required (AA/AAA) Required (rechargeable or AA/AAA) **None** Unlock method Mechanical dial Numeric PIN App / Bluetooth Smartphone NFC tap IP65 Zinc alloy + ABS housing, built for outdoor wall mounting. Designed for outdoor wall mounting near an entrance, on a gate, fence, garage, or other fixed location. The housing combines a zinc alloy structure with an ABS outer body, rated IP65 against dust ingress and water jets. Contact us for more sizes and customization needs Specifications Product Details Specification Product type NFC smart key safe / smart lockbox External dimensions 180 mm (W) × 220 mm (H) × 65 mm (D) Body material Zinc alloy + ABS Mounting type Wall mount (fixed-point) Unlock method Smartphone NFC tap App support iOS and Android NFC app Authorization management Multi-user, time-bound access via app Access record Per-user unlock log with timestamp Weather rating IP65 (dust-tight, protected against water jets) Operating temperature Low-temperature compatible (no battery cold-failure) Color Dark gray Battery / charging requirement None — powered by smartphone NFC during unlock Talk to us about the product — or about your own NFC project. Contact Us * Name * Email * Phone * What are you looking for ? - Select - Message Submit Frequently asked questions FAQ about batter-free NFC key box Does the NFC smart key safe need batteries or charging? No. The key safe has no internal battery. It is powered entirely by NFC energy harvested from the authorized smartphone during the unlock — when there is no phone tapping it, the lock sits in a fully passive state. There are no AA or AAA cells to replace and no charging port to plug in. How does smartphone NFC actually open the key safe? When you hold an authorized phone against the NFC tap area, the phone transmits both a small amount of energy and an encrypted authorization token to the lock. The lock uses the energy to power up just long enough to verify the token against its authorized user list, then releases. The whole exchange takes less than a second. Can multiple people be authorized to open the same key safe? Yes. The owner adds authorized users through the NFC app — family members, guests, cleaners, agents, contractors, and so on. Each authorized phone unlocks independently, and each user is identified separately in the access log. Does it work with both iPhone and Android? Yes. The NFC app is available for both iOS and Android. Any reasonably current iPhone or NFC-equipped Android phone with the app installed and authorized can unlock the key safe. Will I see who opened the key safe and when? Yes. Every open event is recorded in the app with the user identity and timestamp. The log is useful for confirming a guest’s arrival, verifying a cleaner’s visit, or reviewing recent activity in case of a dispute. Is the key safe weatherproof for outdoor wall mounting? Yes. The housing is rated IP65 — dust-tight, and protected against water jets from any direction. It is designed for outdoor wall mounting on house walls, fences, gates, garages, and similar fixed locations. For long-term durability we still recommend mounting under an overhang or porch where practical. Does it work at low temperatures? Yes. The battery-free design avoids the cold-weather failure modes that affect battery-powered smart lockboxes, where AA or AAA cells lose capacity quickly in winter. The same NFC passive lock technology is already used across our wider lock line in low-temperature environments. Is the NFC signal secure — can the unlock be cloned? The authorization is based on encrypted tokens tied to each authorized phone, not a static code, so a casual NFC scan of the lock or another user’s phone cannot be replayed to open it. Combined with per-user logging, this gives a meaningfully higher security baseline than a shared combination code or a static PIN on a keypad lockbox. Built by a Lock Maker, Not a Tech Startup Since 2002, KENRONE has built mechanical, electronic, and now battery-free NFC locks for commercial projects in 100+ countries. We don't just assemble locks — we engineer them, from circuit board to cam mechanism, all under one roof. From mechanical locks in 2002 to NFC battery-free cam locks today — we've evolved with every shift in the industry. 23 Years in Locking We build the complete NFC ecosystem — from battery-free hardware to cloud management — engineered to work together. Systems, Not Just Locks Complete control from circuit design to final QC — no third-party assembly, no surprise quality drift. Fully In-House Manufacturing Tested in the conditions our locks will actually face — extreme temperatures, heavy use, outdoor exposure, contractor rotation. Built for the Field, Not the Lab A finished application of our in-house NFC lock platform This key safe is built on the same NFC passive lock platform behind our padlocks, cabinet locks, cam locks, and the NFC smart bike cable lock — designed and manufactured in-house, and adapted to the key safe form. If you are evaluating NFC unlocking for a custom key safe, locker, or access product of your own, this page is also a working reference for what the technology can do in a finished consumer product. NFC Cam Lock NFC Padlock NFC Euro Cylinder Lock NFC Bike Lock NFC Storage Padlock

NFC battery-free locker lock for gym, pool, and shared facility lockers. Rotating use, no coins or keys, no in-lock batteries, every authorized unlock recorded. Gym Locker Lock — hand it out, get it back , no coins or keys. Give members keyless lockers without coins, keys, or deposits. A locker is opened by phone, used, and released for the next member — and every authorized unlock is recorded. No in-lock batteries to service across the bank. Members keep their phone with them . The phone is the key, so it stays on the user. These lockers are for bags, clothing, shoes, and personal items — not for storing the phone itself. Talk to us See how shared mode works None Coins / keys None Battery in lock Authorized unlocks Access Home > Solutions > Locker Locking Solution > Shared Locker Locking > Fit & Retrofit Fits standard locker banks — no wiring. NFC battery-free cam locks fit standard locker cam-lock cutouts directly. No power runs across the locker room, no civil work — which matters most in wet areas like pools and changing rooms, where wiring each locker is impractical. Standard cam-lock cutouts — direct fit on common locker hardware. No wiring, no power runs, no civil work in wet areas. Convert one bank at a time, on your own schedule. Send us a photo Check Locker Compatibility Send a photo of your locker hardware and we'll confirm fit before we begin the collaboration. → Cutout dimensions: NFC Cam Lock product page The Core Idea Hand out a locker, get it back — without coins or keys. A shared locker bank has one job: give a free compartment to whoever needs it now, then reclaim it for the next person. Coins jam and need refunds. Issued keys walk out the door. Members' own padlocks get left on overnight and have to be cut off. KENRONE NFC locks run the bank in multi-user mode: the operator manages the access list, a member opens an available locker by phone, and the compartment returns to the pool when they're done. No coin float, no key cabinet, no bolt cutters. How Rotation Works One compartment, many users, in turn. 01 OPEN Member opens An available locker is opened with a phone tap; the authorized unlock is recorded. 02 USE In use The compartment is theirs for the session — bag, clothes, shoes inside, phone on them. 03 RELEASE Released When they're done, the locker returns to the available pool for the next member. 04 REPEAT Reassigned The operator's access list keeps the bank cycling without keys, coins, or resets. Operator Control The operator stays in control of the whole bank. Shared lockers are an operations problem, not a personal one. The value is in what the front desk can do. 01 Authorize by membership or time Access can be granted per user, per time-of-day, or per session. 02 See usage Every authorized unlock is tied to a user, time, and locker ID, so a forgotten or abandoned locker can be identified. 03 No deposits to handle Nothing for staff to collect, refund, or reconcile at end of day. Maintenance No battery service across the locker room. In a busy locker room, a battery-powered lock is a maintenance ticket waiting to happen — multiplied by every locker in the bank, in a humid environment that's hard on electronics. NFC battery-free locks have no cell inside: the member's phone provides the power for each unlock, so the operator never schedules a battery round. Honest Limits What this lock is and isn't for. Suitable for Gym & leisure locker banks Pool & spa changing rooms Visitor & hot-desk lockers Rotating lockers for coats, bags, shoes, personal items Indoor & semi-indoor Not for Lockers used to store the member's own phone (the phone is the key) Outdoor lockers below −20°C or above 65°C This is the honest limit for a phone-powered lock, and it's worth telling members up front: keep your phone with you; lock your kit inside. Key Differences Key differences for shared lockers. Full comparison: Locker Solutions overview → . For shared / rotating lockers: Attribute Coin / key lock Battery electronic NFC battery-free Unlock recorded No If powered Yes Battery in lock None Required None Release for next user Manual App App Deposits / coins to handle Yes No No The hardware. Full hardware specs, datasheet, and API/SDK reference live on the product page. NFC Cam Lock product page Talk to Us Tell us about your locker room. We'll recommend the right lock format, access mode, and next step for your facility. Contact Us * Name * Email * Phone * What are you looking for ? - Select - Message Submit FAQ Frequently asked questions What's the best lock for a gym locker bank that members rotate through? For an operator running a shared bank, a battery-free NFC lock removes coins, keys, and deposits while recording each authorized unlock — and there's no battery to service across the bank. Members open by phone and the locker returns to the pool after use. Can the same locker be used by different members through the day? Yes. In multi-user mode the operator manages the access list, and a compartment can be reassigned through the app as members come and go. Do members need to store their phone inside? No — and they shouldn't, since the phone is the key. The locker is for coats, bags, shoes, and personal items; the member keeps the phone on them. Do the locks need batteries or wiring? No. The phone powers the lock over NFC; no wiring is required — useful in wet areas like pools and changing rooms. What if a member forgets to release their locker? Each authorized unlock is logged with user, time, and locker ID, so staff can identify and clear an abandoned locker. Can we use our membership system with it? The platform offers a documented API & SDK for integration with management software; details on request.

Drop-in 19mm/22mm NFC cylinder lock for self-storage units. Fits Public Storage, Extra Space, and U-Haul bezels. No batteries, no tubular keys — just a phone tap. Bulk pricing for facility operators. Battery-Free NFC Self-Storage Cylinder Lock for Storage Unit Doors The KENRONE NFC self-storage cylinder lock drops into the standard 19 mm and 22 mm bezels already fitted to your roll-up doors. No batteries, no wiring, no new hardware — the tenant's phone powers the lock at the moment of the tap. It replaces the mechanical cylinder lock for storage unit doors without changing the door, the bezel, or the way tenants already think about access. Tap a phone to unlock. Manage permissions from the cloud. Skip the keys, the battery swaps, and the "facility-only" lock markups. Drop-in fit — same 19/22 mm cutout as Chateau, Master Lock, and Public Storage cylinders Zero battery in the lock — powered by the phone's NFC field, nothing to drain or replace IP65 sealed — rated against rain, dust, and freeze on outdoor bezels Request a Sample Home / NFC Lock Cylinder for Storage Unit / Engineered for the Realities of Roll-Up Self-Storage Unit Doors This NFC cylinder lock is developed for self-storage unit doors that use a dedicated cylinder locking position. It is intended for projects that want to upgrade traditional storage door locks to a more manageable keyless option Weather-Sealed for Outdoor Bezels IP65-rated against rain, dust, and freeze conditions. No more WD-40 trips in winter. Drop-In 19mm Standard Fit Slides into the same bezel as Chateau, Master Lock, and Public Storage cylinder locks. One-Hand Tap Operation Tap your phone with one hand while the other holds up the door — no fumbling with thin keys. No Tubular Key to Snap Skip the self-storage frustration: snapped tubular keys stuck inside the lock. Why Roll-Up Storage Doors Standardize on Cylinder Locks On the standard roll-up steel door that dominates modern self-storage, the lock sits in a recessed cylinder position. Nothing protrudes from the door, so there is little exposed to the weather or to grip — which is why operators such as Public Storage, Extra Space, CubeSmart, and U-Haul standardize on cylinder bezels for these doors. The KENRONE NFC self-storage cylinder lock fits those same standard bezels — with one upgrade: no key required. Why It Matters Different doors call for different locks, and both belong in a facility. External hasps, drive-up units, older sheds, and shipping containers are built for a padlock — and there a discus disc lock, with its shrouded shackle, is the secure choice. KENRONE makes both, so you match the hardware to the door instead of forcing one type onto every unit. If your units use hasps, see the [NFC disc padlock for storage units] . Recessed roll-up door NFC cylinder lock (this page) Sits flush inside the door Nothing exposed to grip or weather External hasp / drive-up / container NFC disc padlock Shrouded discus shackle Sealed for outdoor and drive-up use A Drop-In Upgrade from Mechanical Storage Cylinders Most smart locks for self-storage ask you to bolt an entirely new locking system onto the door — brackets, wiring, sometimes a fresh cutout. The KENRONE NFC cylinder takes the opposite path: it drops into the bezel you already have. Pull the old mechanical cylinder. Slide in the KENRONE NFC cylinder. Tap the phone. That is the whole installation — usually about 30 seconds per door. Explore NFC Battery-Free Lock System Before → 30 Seconds Later Old mechanical → KENRONE NFC cylinder, same bezel Tubular key → phone-tap unlocking No new opening, no electrician, no downtime for the door No Battery Inside the Lock. Ever. Battery-powered smart locks carry one flaw that self-storage exposes fast: a door that sits untouched for months drains the cell silently. When the tenant finally returns, the lock is dead — and the 9 PM call goes to the facility manager. The KENRONE NFC cylinder removes that failure at the physics level. The phone's NFC field energizes the lock the instant the two touch, the same principle a contactless transit card uses. There is no cell inside the cylinder to deplete. A unit can sit closed for a year and still open on the first tap. See more Compared to Standard Storage Padlocks and Mechanical Cylinders. Three lock types dominate self-storage today. Here's how they stack up against KENRONE NFC cylinders. Comparison Storage Padlock NFC Disc Lock Mechanical Cylinder Lock KENRONE NFC Cylinder Cut/Pry Resistance Weak (exposed shackle) Medium Strong (recessed) Strong (recessed) Unlocking Method Key Smartphone NFC Tap Tubular Key Smartphone NFC Tap Key Loss Risk High None (no keys exist) High (keys snap easily) None (no keys exist) Battery Required None None inside the lock None None inside the lock Multi-Tenant Management Manual Cloud-based access control Manual Cloud-based access control Access Logging None Full cloud audit trail None Full cloud audit trail Weather Sealing Poor IP65 sealed Medium IP65 sealed Typical Cost (per unit) $10-15 B2B pricing on request $12-22 B2B pricing on request Best For Casual outdoor use Smart-managed storage facilities & power tenants Standard storage units Smart-managed storage facilities & power tenants Different door, same technology. If your storage units use disc padlocks instead of cylinders, KENRONE NFC Disc Padlocks deliver the same battery-free, phone-tap access. Need another style — shackle, weatherproof, or custom? Talk to our team and we'll spec the right hardware for your facility. Built for How Facilities and Tenants Actually Operate For Facility Operators Equip a whole site with NFC cylinders. Tenants get a digital key at move-in; you get remote overlock, real-time access logs, and zero key inventory to manage Ideal for : unmanned facilities, multi-location portfolios, and any site working through a digital upgrade. Request Facility Pricing For Tenants (Long-Term Renters) Avoid the $22 "facility-only" lock markup. KENRONE NFC cylinders fit 99% of standard 19mm/22mm bezels — so you can bring your own smart lock, track every access on your phone, and never lose a key again. Ideal for : Long-term renters, business storage users, multi-unit renters. Check Compatibility Size and Compatibility Matter Before Replacement Before you swap a cylinder, confirm the size and door format. Length, internal and external dimensions, and the existing install pattern all decide whether the new cylinder seats correctly. Send a photo of your bezel and we confirm fit within 24 hours. Contact us for more sizes and customization needs Technical Specifications Mechanical Specs Smart Specs Bezel Compatibility: 19 mm & 22 mm Authentication: NFC (ISO 14443-A) Cylinder Body: Hardened zinc alloy Encryption: AES-256 dynamic credentials Operating Temp: -25°C to +70°C Power Source: Passive (smartphone NFC field) Ingress Protection: IP65 (dust + water resistant) Battery: None — zero inside the lock Mechanical : None Compatible Devices: All NFC-enabled iOS & Android phones Weight: ~85g Unlock Response Time: typically 0.5–2 seconds Anti-Tamper: Hardened anti-drill pins Cloud Platform: KENRONE Cloud (REST API available) Certifications: CE, RoHS, FCC, ISO 9001, ISO 14001 Access Log: Cloud-retained (retention configurable) Where This Fits in a Full Self-Storage Access Control Solution The cylinder is the hardware. What turns it into an operating system for the site is the layer around it — credentialing, remote overlock, and per-unit access logs across every door. See how a full deployment works on our self-storage access control solution page, including phased retrofit and the operator economics to model. Frequently asked questions FAQ about Battery-free NFC Self-Storage Cylinder Will the KENRONE NFC cylinder lock fit my self-storage unit's bezel? Yes — for 99% of US and EU storage facilities. The KENRONE NFC cylinder fits the same standard bezels used by Public Storage, Extra Space, CubeSmart, U-Haul, and most independent operators. Send us a photo of your bezel and we'll confirm compatibility in 24 hours. Is the NFC cylinder lock as secure as a mechanical one? More secure, by several measures. Mechanical tubular keys can be picked or duplicated; NFC authentication uses AES-256 encryption with dynamic one-time credentials. What happens if my phone dies? NFC requires very little phone power — even a phone with 1% battery can usually authenticate. Does it work with iPhone and Android? Yes — any NFC-enabled smartphone from the past 6+ years works. No special phone or accessory required. Can the facility manager still overlock my unit if needed? Yes — facility operators using KENRONE's cloud platform can remotely overlock any cylinder, instantly. No need to physically attach a second lock. This is one of the biggest reasons facility operators upgrade to NFC. How is this different from Nokē or other smart storage locks? Most smart storage locks use Bluetooth and require internal batteries that need replacement every 12-18 months. KENRONE NFC cylinders have zero internal battery — the phone provides all the power needed. Lower TCO, no battery-failure complaints, no mid-night facility callouts. What's the cost compared to a Master Lock or Chateau cylinder? Industry pricing for NFC battery-free cylinders typically runs 3–5× a basic mechanical cylinder — that's the going rate from European brands and most importers.KENRONE doesn't sit in that bracket. We manufacture in-house, with no middlemen between our factory and your project, so the price you pay reflects actual hardware cost — not three layers of markup. For facility operators, the payback window is still 12–18 months through reduced key management, overlock automation, and tenant self-service. Send us your unit count and we'll quote real numbers. News & Blog Related Resources Looking for a battery-free NFC Self-Storage cylinder for keyless upgrades or retrofit locking projects? Contact KENRONE to discuss your project. Request a Project Discussion More NFC Battery-free Smart Lock Products NFC Cam Lock NFC Padlock NFC Euro Cylinder Lock NFC Key Box NFC Bike Lock NFC Storage Padlock Built by a Lock Maker, Not a Tech Startup KENRONE has been a lock manufacturer since 2002 and has focused on battery-free NFC locks since 2020, shipping mechanical, electronic, and NFC hardware to projects in 100+ countries. We engineer the whole lock — from circuit board to cam mechanism — under one roof. Request a project discussion → over two decades in locking Vertical lock specialist battery-free hardware and cloud management engineered to work together Systems, Not Just Locks from circuit design to final QC, no third-party assembly Fully In-House Manufacturing tested against extreme temperature, heavy use, and outdoor exposure Built for the Field, Not the Lab

Hudson Hu — Electronics Engineer at KENRONE Hudson Hu Electronics Engineer at KENRONE Hudson Hu has 10 years of experience in the electronics field and joined KENRONE in 2020. He develops the circuitry, PCB layout, embedded firmware, and electronic functions of KENRONE's locks, and works hands-on through prototype debugging, functional testing, and production optimization to keep products running reliably. He holds a bachelor's degree. Company: KENRONE — NFC Battery-Free Lock Manufacturer R&D Team: KENRONE Engineering Team

Compact round-knob cam lock for cabinet and enclosure retrofits. Tap an NFC phone to unlock — no batteries inside the lock, no keys to track. Drops into standard cam lock cutouts. Home / NFC Cam Lock / KR-NFC-CL5126 / Round Knob NFC Keyless Cam Lock KR-NFC-CL5126 Characteristics Round-profile design preferred Unlock by rotating the whole lock body after NFC authorization For access points requiring quick, intuitive operation Specifications Material : ABS+20%PC Size : Ø 51.48*48.5 mm Door thickness : ≤16 mm Customization : Structure • Dimensions • Appearance Protection class : IP65 Operating environment : -25°C~+65°C/10%~90%RH Unlock method : Mobile phone Reverse Power&NFC APP Applications : Wooden Locker,Metal Locker, etc. Dimension line drawing Similar products KR-NFC-CL3515 Through the EU CE, ROHS certification and FCC certification KR-NFC-CL75 Through the EU CE, ROHS certification and FCC certification