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 dead bolt - unlocks door during power outage

- Door sensor: N/C - N/O

- Selectable operation delay time: 0, 2.5, 5, 9 seconds

- Diameter: 15.5mm

- Throw: 16mm

- Power: 12VDC @ 900mA (nominal) operating current (360mA hold current (nominal))

- Face plate dimensions: 200mm x 32mm x 40mm (7.87" x 1.26" x 1.57")

- Strike plate dimensions: 90mm x 26mm x 2mm (3.54" x 1.02" x .08")