Electric Drop Bolt Lock NC Mode Fail Safe DC 12V Electronic Bolt Door Lock for Access Control System with Time Delay

This Electric Drop Bolt Lock can be easily used in Door Access Control System. | NC Mode: Fail-safe mode. When the power turns on, the lock locked. It will be unlocked after you press the push button or remote controller or the power turns off. | This Electronic Bolt Door Lock has time delay function, and the delay time can be set to 0s / 3s / 6s. | Wiring: connect the red cable to "+12v", and black cable to "GND", please check the wiring diagram before installation. | Surface mounted, suitable for wooden door, metal door, fireproof door, etc.