The LSDB-600 is an electric drop bolt that is mounted on any door frame with a width of 1.75" (44.5mm) or more. In addition, when fully mortised, its compact design allows the lock to fit on frames with a depth of 1.75" (44.5mm). The 5/8" (16mm) stainless steel bolt has a 5/8" (16mm) throw, making forced entries difficult. The lock uses a magnetic sensor to sense the door position, thus locking the door when the door is in the closed position, preventing potential tailgaters. The device comes standard at failsafe, and operates on 12VDC, with an aluminum polished face plate cover included.