Universal Remote Control (URS) MRX-20 - Manual (Page 9)

MRX-20 Rear Panel Descriptions
Chapter 1: MRX-20 Overview 5
Rear Panel Descriptions
12 Volt
Two programmable 12V/0.2A outputs. Each may be programmed to turn ON, OFF or momentarily
TOGGLE its output.
Relays
Four programmable relays that maybe set to normally opened (NO), normally closed (NC) or
momentary contacts. A maximum of 30V/.5A per relay.
Sensors
Four sensor ports allow programming of state dependent and triggered macros. Compatible with
URC Sensors: Audio(SEN-AUD),Video (SEN-VID), Voltage (SEN-VOLT), Current (SEN-CMF), Contact
Closure (SEN-CCLS) and Light (SEN-LITE).
RS-232
Four RS-232 ports support TX (Transmit), RX (Receive) and GND (Ground) connections for one-
way/two-way communication. Compatible with URC cables RS232F and RS232M.
Trigger IN For future use!
RFTX-1 Attach an optional RFTX-1 transmitter to work with compatible URC devices.
12 Volt Relays Sensors RS-232 Trigger RFTX-1