ICA100 Rev171109
16
OPERATION
Basic Two-Way System
The basic two-way intercom system includes a master station with volume and 
Push-To-Talk (PTT) controls and a remote station that is operated hands free. The 
remote station is always transmitting unless interrupted by a transmission from the 
master station.
Basic Three-Way System
The basic three-way system includes two master stations (A and B) with volume 
and PTT controls and a remote station that is operated hands free. The remote station is 
always transmitting unless interrupted by a transmission from a master station.  Master 
station A has transmit priority over master station B and the remote station.
System Options
Handheld Microphone Option
This option is for installations in high noise areas. The microphone plugs into a 
receptacle on the station box. The system can be keyed to transmit with the microphone 
switch or the PTT button on the station box.
Remote Station with PTT Button Option
This option is for installations where a remote station with hands free operation is 
not required. The PTT button will have to be pressed for the remote to transmit.
Foot Switch Option
This  option  requires  the  installation  of  a  single-pole  single-throw  foot  switch 
(not supplied with intercom). A two conductor cable is wired at the foot switch and 
connected at the station box with a 2-pin Molex connector. The system can be keyed 
to transmit with the foot switch or the PTT button on the station box.