EMX Industries, Inc.
Tech support: 216-834-0761
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IRB-RET_Rev2.0_080619 technical@emxinc.com
IRB-RET
Universal Retroreflective Photoeye
Instruction Manual
The IRB-RET retroreflective infrared photoeye is an external entrapment protection device type B1,
non-contact sensor for use with automatic gates and doors. Since the reflector directs the beam back to
the photoeye, wiring to the other side of the roadway is not needed. The IRB-RET operates up to 60 feet
over a wide range of voltages (6-40 VDC and 12-24 VAC). A red alignment indicator on the receiver
provides status information at a glance, making set-up and alignment easy. The IRB-RET provides
compatibility with most operators that accommodate monitored external entrapment devices per UL325.
Cautions and Warnings
This product is an accessory or part of a system. Install the IRB-RET according to instructions
from the gate or door operator manufacturer. Comply with all applicable codes and safety
regulations.
Retroreflective photoeyes rely on a reflective surface (a reflector) for proper operation.
In some cases, a vehicle with a reflective surface at a given distance can act as a reflector
and allow the gate to close on a vehicle.
Specifications
Operating Range
5 ft (1.5 m) to 60 ft (18.3 m)
Power
6-40 VDC, 12-24 VAC
ononly)
Current (NC and 10K Monitoring Methods) 60 mA (relay activated)
Current (Pulse Monitoring Methods)
15 mA
Resistive Termination
10K ohm across NO contact (jumper selectable)
Surge Protection
Thermal fuse
Relay Output Operation
Light ON/Dark ON
Relay Output Configuration
Form C contacts (NO, COM, NC)
Transmitter Power Cycle
<300 mS (for use in NC and 10K monitoring)
Methods)
Operating Temperature
-40° to 140°F (-40° to 60°C)
Dimensions (L x W x H)
3.1” (79
mm) x 2.7” (69
mm) x 6.6” (168
mm)
Environmental Rating
NEMA 4X
