User Guide

CTR 8 • Introduction 1
Introduction
About the CTR 8
The Extron CTR 8 control module provides contact closure input switching for most Extron
switchers with RS-232 capability. It allows simple push-buttons to remotely switch and
mute audio and video sources. The CTR 8 accepts up to eight contact closure inputs and
converts them to SIS serial commands that select the corresponding input on an Extron
switcher.
Features
• Eight contact closure inputs with tally allow remote switching and selection
status using simple push-button control.
• COM switcher port sends SIS commands to the Extron switcher for input switching
and muting.
• A/V muting allows the user to mute a switcher output by consecutively pushing the
same input button.
• +5 VDC output on each contact closure input is used to light an LED, indicating
input selection.
• Remote RS-232 port for remote control using Extron Simple Instruction Set (SIS)
commands.
• DC power input with loop-through allows one power supply to power the CTR 8
and an additional Extron device.