Work: closed/locked (shut down), unlock (power on). Elastic compared to other similar products, suitable for doors weighing 0.5 to 4 kg with door bounce compensation. Emergency release: built-in lock emergency release mode, supports manual unlocking function. Energy saving: powered only during unlocking, operation time less than 1 second; low energy consumption when idle. Tested over 500,000 cycles at 10-second intervals, coil designed to prevent burnout. Safety: 280 kg holding force, resistant to permanent deformation, features anti-vibration and tamper-resistant design. Application: refrigerated cabinets, fresh food counters, logistics distribution cabinets, mailboxes, cabinets, bookcases, meter boxes, wardrobes, vending machines, and more. Widely used in schools, mines, factories, supermarkets, logistics centers, military facilities, prisons, courts, hotels, and bathroom centers. Installation: compact size, no left/right or front/back orientation required, easy to install and replace; can be mounted on wall side or embedded. Dimensions: 72 x 13.3 mm. Material: metal. Color: black. Package Contents: 3 x Electromagnetic Lock, 3 x Lock Catch. Only the above items included; other products not included. Note: Lighting and display differences may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3 cm.