MX-1200DSB, single door 1200 lbs electromagnetic lock with timer, with the door status signal output, time delay and led indicate, specially used to normal glass door, wodden door, metal door, fire doors, and all kinds of door. Hoisting design, saves time and power when installation. Inward door, frameless glass door, narrow door all have a complete set of accessories. Special Anti-residual magnetic design makes automatic access control safer.