... electric drop bolt lock for automatic door Fail Safe electric drop bolt lock for automatic doorVoltage:DC12VStart Current: 900mA Standby ... polishing housing, 800Kg Holding Force Suitable For: Woodeng Door,Glass Door,Metal DoorSurface Temp: Low TemperatureAutolock Time Delay: 0 ... ,3,6,9sec.Signal Output: Door status Output,NC/COMInduction Distance: 8mmOperating temp: -10 ...