what is latch bolt 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...
Followings are the list of the electric latch retraction EL/HDEL (hex dogging), QEL (quiet) kits: 114317-00 QELA Mod. Conv. Kit 040061-00 QELA Mod. Conv. Kit...