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> Securitron M82SC magnalock 82 1800LB door holder lock
Securitron M82SC magnalock 82 1800LB door holder lock
Securitron M82SC Magnalock 82 1800lb Door Holder Lock.
NOTE: This model with the SC designation has the two wires for suppling 12-24 VDC to the lock, plus three more than can be used if you choose. These wires are used to detect if the door is shut. They use the metal plate to complete a low current/voltage circuit, which operates a small SPDT switch. One pair of wires is NO, and the other wiring configuration is NC. You can use this feature to sense if the door is shut, not just that there's power to the lock.
