1085S is an excellent electric motor bolt lock, adopts the up-to-date CPU control, changeable from fail secure to fail safe working mode. It is designed to be controlled with 3 wires. Positive voltage should be connected to DC power, and the monitor wire connect to power or unconnected to be power to lock or power to open. When choose the monitor wire to open, the locking or unlocking allowing the bolt to retract with up to 15kg of side load. The lock operates voltage between 12VDC and 24VD, low consumption, the lock working without getting hot. It is good at anti-prize and anti-jamming etc