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  Return MODEL IRB-RET - Universal Retroreflective Photoeye
UL-325-2016 NEMA 4X
The IRB-RET is a monitored, weatherproof, retroreflective photoeye, that is the a great solution for providing entrapment protection on doors, gates, and barriers - all without having to run wires to the opposite side as typical with thru beam photoeyes. This feature alone helps to reduce installation costs. The IRB-RET photoeye is UL325-2016 compliant and housed in a rugged NEMA 4X enclosure that is rated for indoor and outdoor usage. The universal design of the IRB-RET allows this product to be used on a wide variety of monitored operators, and most non-monitored legacy products.

The IRB-RET provides 5 monitoring interfaces:

  1. Normally Closed
  2. Two-Wire Pulsed (2 Frequency)
  3. Two-Wire Pulsed (3 Frequency)
  4. Four Wire Pulsed
  5. 10K Resistive Termination

The IRB-RET is considered universal because of the flexibility it provides when it comes to external entrapment protection.


  • Easy to install and set-up thanks to the selective monitoring interface.
  • Rugged NEMA 4X enclosure
  • Robust design minimizes fogging and false triggering while providing easy alignment
  • Operating range up to 60' (18.3m)
  • UL325-2016 Compliant
  • Compatible with many gate operators (2 sets generally needed - one for opening cycle and one for closing cycle)
  • Mounting bracket and reflector provided

Installation Manual (PDF) | Specification Sheet (PDF)

Monitored Retroreflective Photo Eye from EMX - IRB-RET

IRB-RET Monitored Retroreflective Photo Beam

Optional Accessories:
Mounting Bracket for EMX IRB-RET Photoeye
Mounting Bracket
(Included w/ Eye)
Reflector for EMX IRB-RET Photoeye
(Included w/ Eye)
Protective Hood for Reflector
Protective Hood
IRB-RET Monitored Retroreflective Photoeye Set - Includes Eye, Reflector, and Mounting Bracket $ Add to Cart
REFLECTOR-O-EX Replacement External Reflector $ Add to Cart
REFLECTOR-O-HD Optional Reflector Protective Hood $ Add to Cart