Features: * Fits both left and right hand doors by rotating the lock 180 degrees. Supports manual unlocking with 3 keys included. * Unit has two wires for electronic access. Offers high anti-theft and safety performance. * NO (open when powered) fail secure operating mode. Includes electronic control unlocking unit and spring adjustment balance unit. * Made of high-quality iron with surface dusting technology for durability. User-friendly design and easy to install. * Compatible with various access control systems and video door systems. Suitable for use in homes, offices, schools, hotels, factories, warehouses, and other commercial or residential applications. Specifications: Voltage: DC 9–12V Current: 1.5A–3A Power: >12W Operating Mode: NO (open when powered) Working Temperature: -40°C to 50°C Package Size: 18 x 11 x 8 cm (7.1 x 4.3 x 3.1 inches) Package Weight: 1237g (43.6 oz) Package List: 1 x Electric Lock 1 x Key Cylinder 3 x Keys 1 x Installation Accessories (screws)