All locks are pre-programmed. These locks are made of ABS material. Two unlock modes: Use card to unlock (ideal for home use); use user card + management card to unlock (suitable for business environments such as hotels, massage centers, etc.). This electronic cabinet lock kit is designed for cabinets, drawers, lockers, storage boxes, and similar applications in household or commercial settings including supermarkets, sauna clubs, gyms, swimming pools, 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 work through metal doors. Provides reliable security for personal belongings and enhances privacy protection. Helps improve child safety at home 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 products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement tolerance is +/- 1-3 cm.