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 (ideal for business environments such as hotels, massage centers, etc.). This electronic cabinet lock kit is suitable for cabinets, drawers, lockers, storage boxes, and similar applications in household or commercial settings such as supermarkets, sauna clubs, gyms, swimming facilities, libraries, factories, and offices. Compatible with wooden cabinets and drawers – the lock fits wooden doors up to 1 1/4 inch thick. Ideal for securing cabinets, drawers, lockers, cupboards, carts, data racks, and more. RFID does not work through metal doors. Provides reliable protection for personal items and privacy. Helps prevent children from accessing drawers or cabinets. Compact, space-saving design. DIY installation with screws – no drilling required. Operates on 2x AA batteries (not included). The lock automatically opens 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 effects and monitor settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.