Sturdy Mechanism & DIY Installation The latch and mortise are made of metal, providing durable locking performance. No drilling required—install easily with 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 home cabinets, lockers, drawers, cupboards, closets, medical carts, data racks, storage boxes, safes, gyms, swimming pools, libraries, factories, and offices. Wide range of applications. One Card for Multiple Locks Easily program one key card to work with multiple locks. Reset, add, or delete key cards at any time. The lock uses 13.56MHz M1 cards, offering higher sensitivity and improved security compared to standard 125kHz ID cards. NFC & RFID Supported This lock is compatible with RFID keys and supports NFC technology. For Android devices, copy your RFID key to your smartphone’s digital wallet using NFC. For iOS, add a transit card to your wallet and program it as an NFC access card for the lock. Low Power Alarm & Auto-Unlock Feature In low power mode, the lock remains unlocked to prevent being locked out. 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 continue normal operation.