When a "fail-safe" device looses power its default position is "unlocked" (or "open"). If installed on a door, the door itself may or may not swing open depending on its construction, but the door strike device will be in an unlocked state until power returns.

- Fail-safe door strike - unlocks door during power outage

- Power: 12VDC, 400mA

- Dimensions: 128mm x 32mm x 38mm (5.04" x 1.26" x 1.50")