Description: Iron material, zinc plated in surface, anti-rust. Features: Quick response, Easy operation, Small size, Light weight. Suitable for all kinds of doors, windows, boxes, counters, drawers, such as storage cabinets, power distribution cabinets, safes and more. Operation: power-on then unlocked (pull back the bolt); Power-off then locked (push out the bolt-normal condition) Please refer to the dimension drawing for specific dimensions. Specification: Size (L x W x H): 40x13x16mm / 1.6x0.5x0.6inch Line Length: 10cm / 3.9inch Voltage: 12v Current: 0.43A Power: 5W Stroke length: 4mm Maximum power time: 15 seconds Package Includes: 1 Piece Electric lock