Propiedad de Vendwatch Telematics - Con
fi
dencial
CONNECTING THE DOOR SWITCH
The cable used to connect the device to the VM door switch has 6 wires providing 3 separate functions; each
using dedicated color wires based on VM instrumentation as follows:
•
NC Pair: RED/ORANGE
•
NO Pair: BROWN/BLACK
•
VT NO Switch Kit available for sale: GREEN/YELLOW
The VM is equipped with a door switch connected to the VMC; typically, one of the poles is connected to
what’s universally referred as common (return, ground or shield); the other pole is commonly referred as
the “hot wire” and re
fl
ects the state of the door. The door switch is determined to be in a
“NORMAL”
state when the plunger
“IS NOT”
retracted hence the term Normally Closed (NC) or Normally Open (NO).
