All locks are pre-programmed. These locks are made of ABS material. Two unlock modes: Use a card to unlock (ideal for personal use); use a user card plus a management card to unlock (suitable for commercial applications such as hotels, massage centers, etc.). This electronic cabinet lock kit is designed for cabinets, drawers, lockers, storage boxes, and similar enclosures, suitable for both household and business environments including supermarkets, sauna clubs, gyms, swimming facilities, libraries, factories, and offices. Compatible with wooden cabinets and drawers – the lock fits wooden doors up to 1.25 inches thick. Ideal for securing cabinets, drawers, lockers, cupboards, carts, data racks, and more. RFID technology does not function through metal doors. Provides reliable security for personal belongings and enhances privacy protection. Also helps improve child safety by preventing children from freely opening drawers or cabinet doors. Compact, space-saving design. DIY installation with screws – no drilling required. Operates on 2 x AA batteries (not included). The lock will automatically open when battery voltage is low. Color: Grey Material: ABS Package Contents: 1 x Lock (batteries not included) 1 x Lock buckle 1 x Sensor patch 3 x Key chains 1 x Sensor card 1 pack x Screws Note: The package includes only the items listed above. Other accessories or products are not included. Note: Lighting effects and display settings may cause slight color variations between the image and the actual item. Measurement tolerance allows for an error of +/- 1-3 cm.