Universal UL325 Retroreflective Photoeye Kit

  • Kit includes photoeye with hood, reflector with hood, and mounting bracket
  • Retroreflective configuration
  • UL325-2018 compliant
  • Six (6) monitoring interfaces
  • 60 ft. operating range
  • Easy installation and set-up
  • Compatible with many operators


The EMX IRB-RET is a monitored, weather-proof retroreflective photoeye solution providing entrapment protection for automatic gates and doors. Retroreflective configuration eliminates the need for a separate transmitter and the associated wiring across a roadway to reduce installation costs. The EMX IRB-RET photoeye unit is UL325-2018 compliant and housed in a rugged NEMA 4X enclosure suitable for indoor and outdoor use.

The universal design of the EMX IRB-RET allows it to be used with a wide variety of monitored operators. Additionally, it is compatible with most non-monitored legacy products.

This universal UL325 retroreflective photoeye kit includes: photoeye with hood, reflector with hood, and mounting bracket with hardware.

Features of Our IRB-RET Photoeyes

  • Type B1, non-contact sensor
  • UL 325-2018 compliant
  • Operating range up to 60 ft. (18.3 m)
  • NEMA 4X enclosure
  • Sensitivity adjustment: potentiometer

The IRB-RET universal UL325 retroreflective photoeye has 6 monitoring interfaces:

  • Normally closed
  • Two-wire pulse (2 freq)
  • Two-wire pulse (3 freq)
  • Four-wire pulse (2 freq)
  • Four-wire pulse (3 freq)
  • 10k resistive termination
Operating range 5 ft. (1.5m) to 60 ft. (18.3 m)
Sensitivity adjustment Potentiometer
Power indicator Green LED
Detect indicator Flashing green LED
Mode selection switch 3 modes, relay output, pulse (3 frequency), pulse (2 frequency)
Pulse output 2 wire/4 wire
Relay output operation Light on/dark on selection
Relay output Form C contacts (NO, COM, NC)
Resistive termination 10k Ohm across NO contact
Power protection Thermal fuse
Transmitter power cycle >300mS (for use in configuration 0 Monitored)
Power supply 6-40 VDC, 12-24 VAC @60Hz (configuration 0-relay only)
Current (config. 1 and 2) 15 mA (12 VDC, includes TX and RX wired in parallel)
Current (config. 0) 60 mA (relay activated)
Operating temperature -40°F to 140°F (-40°C to 60°C)
Environmental NEMA 4X
Dimensions (L x W x H) 3.1″ (79 mm) x 2.7″ (69 mm) x 6.6″ (168 mm)
Weight 0.7 lbs.
Connections 9 screw terminals

This universal UL325 retroreflective photoeye kit includes:

Black powder coated steel
snap on hood for photoeye
Hood installation guide

White plastic reflector
3″ diameter

Gray plastic protective hood for reflector

with mounting hardware

Black powder coated steel
bollard for photoeye
Learn more

Spec Sheet


IRB-RET Webinar Recording



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