One Card for Multiple Locks: You can easily program one key card into multiple locks and reset, add, or delete key cards as needed. The lock uses 13.56MHz M1 cards, which offer improved sensitivity and security compared to standard 125kHz ID cards. 1.5 in RFID Detection Thickness: RFID technology allows card reading through wood panels up to 38 mm thick. Suitable for cabinets, lockers, drawers, closets, medical carts, data racks, storage boxes, safes, pools, libraries, factories, and offices. Sturdy Mechanism and DIY Installation: Bolt and mortise are constructed from metal for durable locking performance. No drilling required—install easily with screws. For non-wood surfaces, 3M tape is recommended instead of screws. Low Power Alarm and Emergency Access: The lock provides a low battery alert with a long beep after opening, allowing approximately 15 more uses before battery replacement is required. Ensures you are not locked out unexpectedly. Hidden Invisibly Installed Design: Installed inside the cabinet door, this hidden lock allows hands-free unlocking. Helps protect personal items and enhances child safety at home. Secure and discreet locking solution.