What is latchbolt monitoring?

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THIS ITEM IS DISCONTINUED - See the related solution "Is a latch bolt monitor available with the Schlage mortise electrified locks?"Latch monitoring, or LM is available as an option on the&nbs...
LX Feature
The ND-Series RX,  the L-Series RX and latch monitoring switches are Form C - Single Pole Double Throw (also known as SPDT).
LM, LX
As of February 2016, some Schlage electrified locksets can be ordered with deadbolt monitoring.  To order deadbolt monitoring with an L series lockset specify DM in the option field....
The DS is Dual Monitor Switch for Von Duprin 6000 series electric strikes. DS option cannot be added to a Von Duprin 6000 series electric strikes in the field. It is only available factory inst...
The following steps are required to convert the Von Duprin 98/9975L from classroom to night latch function: Order new 996L-NL-M trim and reset NL drive screw in mortise lockbody as set from...
The following items may cause the exit devices top latch from being held in the retracted position. 1. The top or bottom rods are out of adjustment. 2. The top latch hold back...
Following exit devices 2227/F, 33/3527A/F, 33/3547A/48A/F, 98/9927/F and 98/9947/48/F have similar rod adjustment procedures. All top latches control the bottom latch assemblies. When do...