Ness 101-157D Dual 600lb Magnetic Lock with advanced integrated door status monitoring function (DSMF) provides door opened/closed output in addition to the standard lock status monitoring function (LSMF).

101-157D is designed to meet fire and life safety applications by providing an auxiliary locking mechanism that has no moving parts to bind or wear out for trouble free operation. Suitable for higher security areas within buildings with double leaf doors.