The SECO-LARM SD-997B-1SQ Mini Surface-Mount Electric Deadbolts is designed for hollow metal door frames and solid wooden door frames. Its small size makes it easy to add secure, electrical locking to small doors.

*Fail-safe operation (unlocks if power is lost).

*Surface-mount design for easy installation.

*Magnetic switch senses door position for positive locking.

*Stainless steel bolt, 15/32”(12.7mm) diameter, 9/16”(14mm) throw.

*Automatically relocks after 6 seconds if the lock was unlocked but the door was not opened.

*Door open/close monitor (NC/COM).

*Lock delay timer adjustable between 0 and 3 seconds.

*Use with an optional digital keypad for high security without a key.

*Powered by a solenoid.