Sturdy Mechanism & DIY Installation The latch and mortise are made of metal, providing reliable strength for secure locking. No drilling required—easy installation using screws. For non-wood surfaces, it is recommended to use 3M tape instead of screws. RFID Sensing Thickness 1.5 in RFID cards can penetrate through wood panels up to 38mm (1.5 inches). Ideal for use on cabinets, lockers, drawers, cupboards, closets, medical carts, data racks, storage boxes, safes, gyms, swimming pools, libraries, factories, and offices—offering wide application. One Card for Multiple Locks Easily program one key card to work with multiple locks. Users can reset, add, or remove key cards as needed. The lock uses 13.56MHz M1 RFID cards, offering improved sensitivity and security compared to standard 125kHz ID cards. NFC & RFID Supported This lock is compatible with RFID key cards and supports NFC technology. For Android devices, copy your RFID key to your smartphone’s digital wallet using NFC. For iOS devices, add a transit card to Apple Wallet and program it as an access card for the lock. Low Power Alarm & Auto-Unlock Feature In low power mode, the lock automatically remains unlocked to prevent lockout. When the battery is low, a long beep sounds after opening. The lock can still operate approximately 15 times on remaining power. Replace the battery promptly to restore full functionality.