Fail-unlocked 34 The electric strike is locked for as long as the power is on. If the power is switched off or if there is a power cut, the electric strike latch can be moved and the door can be opened. Electric strike 34Electric strike Fail-unlocked Electric strike 34FFElectric strike FaFix® adjustment range, Fail-unlocked Electric strike 3405Electric strike Diode (05), Fail-unlocked