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Relay Output Universal Receiver 

RB709U-NB

ACCESS SYSTEMS, LLC

Owners Manual

10033256 Rev-A

©2021 Nortek Security & Control LLC. All rights reserved. 
Mighty Mule and GTO are registered trademarks of Nortek Security & Control LLC.

Mighty Mule Sales: 800-543-4283

  

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Mighty Mule Technical Service 800-543-1236

For more information on Mighty Mule’s full line of Automatic Gate Operators, Gate Openers and Access Controls visit

www.mightymule.com

Wiring Receiver to Operators with R4211 and R5211 Control Boards

Specifications

Example Operators: MM560, MM562, MM660, 

PRO-SW4000XLS Series, PRO-SW3000XLS 

Series, PRO-SW4000XL Series, PRO-

SW3000XL Series, PRO-SW2000XL Series, 

PRO3000 Series and PRO4000 Series

Double Spade Connectors

included with 

SENSOR

Battery Cable

    

RED (+)

8 to 24 VOLT AC/DC 
POWER SUPPLY or BATTERY
RED WIRE to POSITIVE
BLACK WIRE to NEGATIVE

BATTERY or 

TRANSFORMER

SURGE PROTECTOR

(RB570 or R4215)

BLUE

GREEN

BROWN

RED

BLACK

YELLOW

GRN

BLK

RED

RECEIVER

COM

COM

CYCLE

SAFETY

EXIT

SHADOW

LOOP

CLOSE 

EDGE

OPEN

EDGE

CONTROL INPUTS

RECEIVER

Compatible transmitter:

 

•  GTO 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.

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.

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