Operation: Close/Lock (Power Off) and Unlock (Power On). Compared to other similar products, this design is resilient and can handle doors weighing 0.5-4 kg. Emergency Unlock: The body lock has an emergency unlock mode that can also be used as a manual emergency unlock. Energy Saving: Unlocks in less than 1 second when powered on, and consumes no power when the door is open. Durability: Tested 500,000 times at 10-second intervals without coil burnout. Safety: 280 kg holding force, no significant permanent deformation, and shock-resistant and tamper-resistant. Applications: Refrigerated cabinets, food delivery cabinets, distribution logistics cabinets, mailbox cabinets, bookcases, electric meter cabinets, lockers, vending machines, and more. Widely used in schools, mines, factories, supermarkets, logistics complexes, military units, prisons, courts, hotels, bathroom facilities, and more. Installation: Compact, with no left-right or front-end design, it's easy to install and replace. It can be mounted on a side wall or in a storage container. Dimensions: 72*13.3 mm Material: Metal Color: Black Package Contents: 3 * Electromagnetic Locks 3 * Lock. Includes only the above packaging contents; no other products are included. Note: Light reflections and different monitors may cause the color of the item in the image to vary slightly from the actual item. Measurements may vary by +/- 1-3 cm.