Magnetic door contacts and electromechanical ball switch assemblies provide a means of monitoring door status.
DPS-11-2 SDC Door Status Switch, Electromechanical Ball, DPDT, 5 Amp
MC-4M SDC Door Status Switch, Magnetic Contact, Vandal Resistant, Mortise Face Plate, SPDT, 50 mA
MC-7 SDC Door Status Switch, Magnetic Contact, Biased High Security, Press Fit, SPDT, 50 mA, 1" dia.
MC-4PAK Recessed magnetic
(3/4", SPDT, 30VDC, 50mA, ULC Fire Rated for MC-4PAK ), pack