1Anti-magnetic off function, unlock without magnetic, locked without external interference, high security, prevent man-made damage. 2The delay time can be adjusted freely through the switch. Three levels are optional: 0-3-6 seconds. 3Low power consumption, moderate starting current, energy saving and environmental protection. 4Zinc alloy shell, it has better anti - interference performance, firm and durable. 5Simple installation, no complicated tools required, convenient to use.Condition: 100% Brand New Item Type: Electric Bolt Lock Material: Zinc Alloy Color: As picture shown Working Voltage: DC12V Dynamic Current: 900mA Static Current: 90mA Operating Environment Temperature: 0-50 Coil Type: Continuous Operation Type Delay Function: Delay time can be adjusted 0-3-6 seconds Surface Temperature: Below Ambient Temperature +15 Wiring Instructions: Red wire connect to DC12V, Black wire connect to GND1 x Electric Bolt Lock2 x Sheet Metal Guard1 x Screw Pack1 x Instruction