12/24V Selectable. This Asec standard mortice magnet is designed for flush mount applications access control, where an auxiliary locking mechanism without moving parts is required such as fire or life safety situations. It has a holding force of up to 1200 lbs, dual selectable voltage 12V or 24V and lock monitoring. . Designed for flush mount applications. Up to 1200 lbs holding force. Lock status monitoring. No moving parts to bind or wear out