Fail Release Door Lock

The latch stays in a retracted position as long as power is applied but as soon as power is.

Fail release door lock.

For vehicles with traditional style door lock cylinders and keys a bad power door lock relay will merely disable the power door lock feature. This will require the driver to use the key to lock or unlock the doors and can disable the power door. The door lock will fail safe enabling you to have free egress without a hitch. Fail safe and fail secure strikes are available.

Most fail secure locks use a technology known as electric latch retraction el which basically means that power is required to retract the latch and unlock the door. If the door lock actuators fail they will disable the power door lock feature from working. Power door locks do not function. For vehicles equipped with door lock cylinders the door can still be opened using the key.

To keep it locked during normal business operations power is applied. The sdc electromagnetic lock is suited for interior doors perimeter exit doors and entrances that require failsafe emergency release capability compatible with any access control system sdc 1500 series magnetic door locks meet the demands of security professionals and the most rigorous building and fire life safety codes in the world. Should the power be interrupted or fail the door automatically unlocks or releases to let people out of the space. Electric deadbolts provide superior security and safety and include fail safe operation for doors and gates.

However vehicles without door lock cylinders will not be able to lock or unlock the doors until power is restored. When looking at fail safe locks this means that it s default state is actually unlocked.