Electric locks come in many forms, mainly include eletric magnetic lock, electric bolt, electric strike, 12VDC or 24VDC voltage optional, for safety reason, the electric locks have fail safe(unlocked) and fail secure(locked) 2 types. electric locks could also have additional functions such DPS(Door positioning switch), BPS(Bolt positioning switch), MBS(Magnetic bond sensor) to trigger auxillary device such as LED or siren to alarm operator to do the necessory protection steps.