Universal Remote Control MRX-20 Owner's Manual download pdf (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

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Universal Remote Control MRX-20 Owner's Manual Page 9