Mighty Mule R4222 User Manual
PHOTOELECTRIC
DUAL BEAM DETECTOR
Owners Manual
R4222
The GTO Access Systems Photoelectric Dual Beam Detector uses dual beam and through-beam technology
to reduce false detections when detecting obstructions. When the beams detect the presence of a moving
object, the detection will cause the gate(s) to stop and reverse to the fully open position. As long as the
beam is obstructed the gate(s) will remain open. Not compatible with solar powered gate operators.
For use with all GTO Access Systems and Mighty Mule AC and DC powered gate operators.
PARTS DESCRIPTION
INTERNAL VIEW OF RECEIVERCOVER
Response Time
Adjustment Screw
(receiver only)
Signal Level
Test Points
Tamper Switch
Horizontal Angle
Adjustment Bracket
Cover Locking
Screw
Connection
Terminals
Indicator
Lights
Vertical
Alignment
Screw
Sight Hole
Lens
Wiring Hole
For more information on GTO’s full line of automatic gate openers and access controls visit our website at www.gtoaccess.com
GTO • 3121 Hartseld Road • Tallahassee, Florida 32303 • (800) 543-4283 • www.gtoaccess.com
Technical Service (800) 543-1236
R4222 Rev. 08/02/10
Printed in China for Gates That Open, LLC
©2009 Gates That Open, LLC
Installation Overview
Diagram illustrates correct placement of photo beams in relation to the gate.
Exterior placement
of Photo Beams
(placed outside of path of gate)
Vehicular Gate
Interior placement
of Photo Beams
(placed outside of path of gate)
Mounting Cautions
Be sure that the optical axis is never obstructed. (The optical axis is both the vertical and horizontal
range of detection, or beam, between the transmitter and receiver)
Do not mount the detector in the following conditions:
Where obstructions (plants, fences, etc.)
are between the receiver and the sender.
Mounting Height
Sensing Area
Where the mounting
surface is unstable.
Spread of Beam
Beam Alignment
Range
Horizontally 180°
Up/Down Direction
20° (±10° )
The optical axis can be fine tune
adjusted in horizontal and
vertical direction.
Where sunlight and headlights shine
directly into the front of the receiver.
Transmitter
Receiver
When using more than one set make
sure to alternate the transmitters
and detectors as above.
Transmitter
Transmitter
Receiver
Transmitter
Receiver
Receiver
2
Wall Mounting
1. Remove Photo Beam
cover by loosening the
cover holding screw, but
DO NOT REMOVE THE
SCREW ALL THE WAY.
3. Remove the rubber
knockout and use the
screw holes to mount
the unit.
SCREW HOLE
RECEIVER
GOOD LEVEL ALARM
SCREW HOLE
2. Pull the wire through the
wiring hole at the top of the
unit, from back to front.
4. Mount the Photo Beam on
the wall while running the wire
into the wiring location in the
wall.
Pole Mounting
1. Remove the Photo Beam cover (as shown in step 1 above).
2. Feed the wire through the mounting pole.
3. Using the Mounting Plate and Bracket secure the Photo
Beam to the mounting pole.
Feed Wire
Through Pole
Mounting
Bracket
Base Plate
Back to Back Installation
(Refer to the gure above)
3
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