3M XT-1 Installation Manual page 21

3M Headset Intercom System Model XT-1 Installation Manual
Notes:
The cable coloring is valid for the D15 standard cable. For other cable types
use the terminal definitions on page 14 as a guide.
Auxiliary Detector Relays
You can use the base station's vehicle detection circuits to operate an auxiliary
relay for a number of convenient uses (typically an external greeter or timer
module, but could also be used to operate a vehicle approach chime or other
device that is independent of the intercom system). Virtually any device that
can be activated by opening or closing a switch can be linked to vehicle
detection.
The relay terminals are numbered according to the vehicle detector they are
paired with. For example, RELAY1_COM, RELAY1_NO, and RELAY1_NC
are paired with Vehicle Detector 1 (VEHDEH.1).
Installation
Rev 1.0 © 3M 2007 November
Page 21 of 54