Securitron LM_Series - Manual (Page 2)

PN# 500-12100
Page 2 Rev. D, 03/11
4. WIRING
The latch monitor has three wires (per switch) that are assigned by color as follows:
White = Common Red = N.C. Black = N.O.
Because we’re using the terms normally open and normally closed, it’s necessary to define what
we mean by “normal”. The normal condition of the latch monitor is when it is reporting
secure (the latch or dead bolt is engaged). So, for example, you’ll read a closed circuit between
White and Red if you meter the unit in the secure condition (latch is engaged) but you’ll read
open if you meter it in the alarm condition (door is open). Maximum contact ratings are 2
Amps at 24V.
Securitron’s Latch Monitor series is covered under US patent #5,757,269
5. MAGNACARE  LIFETIME REPLACEMENT WARRANTY
For warranty information visit www.securitron.com/en/site/securitron/About/MagnaCare-Warranty/