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RB709U-NB

Relay Output Universal Receiver 

Owners Manual

The RB709U-NB digital receiver is a 

wireless radio control designed for 

use with automated gate openers and 

garage door openers. The receiver has 

two channels for receiving signals from 

two activation devices; i.e. transmit-

ters, multi-button transmitters, wireless 

keypads, etc.

www.gtoaccess.com

Specifications

Compatible transmitter: 

  • Linear PRO Access or Mighty Mule gray narrow band transmitters (318MHz) 

Power input: 

  • 8-24 V ac/dc, 10ma standby, 40ma activated (Red & Black wires). 

Outputs: 2 channels pulsed outputs

  • 2 channels dry-contact normally open relay outputs.

  • Channel 1: Blue (N/O Contact) & Green (COM) wires.

  • Channel 2: Yellow (N/O Contact) & Brown (COM) wires.

  • Activated for .5 seconds when the correct transmitter code is received. 

  • Relay switching maximum rating: 24Vac/dc @ 1A.
  • Operating Range 50 to 100 feet (15.2 to 30.5 m)

Indoor/Outdoor compatible.

Mount receiver at least 3 feet from AC power source.

Mounting the Receiver

Connect Receiver to Relay Inputs and Power

Consider the following when mounting the receiver:
•  Standard receiver cable length is 10 feet (3.05 m).
•  For exterior applications run the cable through PVC 

conduit to protect it from damage. 

•  DO NOT run cable in conduit containing ac wiring.
•  The receiver range can vary from 50 to 100 feet  (15.2 

to 30.5 m) depending upon weather, topography, and 
external interference.

FCC Regulation

This device complies with FCC rules Part 15.  Operation is subject to the following conditions:

1. This device may not cause harmful interference.

2. This device must accept an interference that may cause undesired operation.

Transmitter distance may vary due to circumstances beyond our control.  NOTE: The manufacturer is not 

responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such 

modifications could void the user’s authority to operate the equipment.

NOTE:  Do not mount upside down in exterior applications.

Channel 1 (To COM)

Channel 1 (To N/O Contact)

Channel 2 (To COM)
Channel 2 (To N/O Contact)

2nd GATE OPERATOR or DOOR OPENER

1st GATE OPERATOR or DOOR OPENER

8 to 24 VOLT AC/DC 

POWER SUPPLY

RED WIRE to POSITIVE

BLACK WIRE to NEGATIVE

RED

BLACK

GREEN

BLUE

BROWN

YELLOW

Designed to work with most brands of gate and door 

openers.

Printed in China for GTO Access Systems, LLC

rev-12/09/14

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