Sturdy Metal Construction and Easy Installation The latch and mortise are made of metal, providing reliable locking performance. Installation requires no drilling—simply use screws for wood surfaces. For non-wood surfaces, 3M tape is recommended instead of screws. RFID Sensing Capability Supports RFID card reading through wood panels up to 38 mm (1.5 inches) thick. Suitable for cabinets, lockers, drawers, cupboards, closets, medical carts, data racks, gun storage boxes, safes, gyms, swimming pools, libraries, factories, and offices. One Card, Multiple Locks Easily program a single key card to operate multiple locks. Cards can be added, deleted, or reset at any time. Uses 13.56 MHz MIFARE Classic cards, offering higher sensitivity and security compared to standard 125 kHz ID cards. NFC and RFID Compatibility Works with RFID key cards and supports NFC functionality. For Android devices, copy the RFID key to the smartphone’s digital wallet via NFC. For iOS devices, add a transit card to Wallet and program it as an NFC access card for the lock. Low-Power Alert and Auto-Unlock Feature When battery power is low, the lock automatically remains unlocked to prevent being locked out. A long audible beep sounds after unlocking to indicate low battery; approximately 15 more operations are possible before battery replacement is required.