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Liftmaster LMRRUL Monitored Photo Eyes (LMRRUL)

Liftmaster LMRRUL Monitored Photo Eyes

LMRRUL features integrated diagnostics with our 2018 UL® 325 Gate Operators.

  • Versatile Solution for entrapment protection. 
  • Long-Range Sensing Distance of up to 50 ft. (LMRRUL)
  • Built-In Heater for dependable performance in most environments. 
  • Increased Beam Angle for simple, reliable alignment.
  • Versatile Gimble Bracket for fine alignment and adjustability.
  • Warranty 2 years.
  • Alignment Strength Indicator signals optimal beam alignment.
  • Multi-View Led Lights indicate sensor status, simplifying installation.

Safe and Secure
  • Secure Mounting Hardware for versatile performance in harsh applications.
  • Hoods Included for durability and shield from elements.
  • NEMA 4X Rated for superior weather resistance.
  • UL Recognized: tested and evaluated by UL and meet UL 325 requirements.

Quality Grade Design

  • Stainless-steel sensor hood
  • Durable polycarbonate reflector hood
  • Powder-coated galvanized mounting brackets

  • LMRRUL: 3.3 lbs.

Dimensions Photo Eye with Hood*
  • Height: 4.6”
  • Width: 2.45”
  • Depth: 2.76”

Dimensions Photo Eye without Hood
  • Height: 4.56”
  • Width: 2.35”
  • Depth: 1.97”

Dimensions Reflector with Hood
  • Height: 4.72”
  • Width: 2.01”
  • Depth: 2.61”

Temperature Specifications
  • -40°F (-40°C) to 149°F (65°C)


  • Solid Blue—optimal alignment
  • Blinking Blue—LED blinks faster to indicate near alignment
  • Solid Red—misaligned or obstructed

Standard Features
  • Input Voltage and Current Draw Sensor: Black/Red Wires: 6.8V DC, 20mA
  • Heater: Green/White Wires: 10–40V DC or 8–28V AC, 2 Watts Max., 170mA at 120V DC/AC, 85mA at 24V DC/AC
  • Monitoring Technology: pulsed system
  • Interface: 4-Wire connection (2 for Eye; 2 for heater)
  • Sensor Compatibility: LMRRUL emitter is not interchangeable with LMTBUL emitter
  • Includes: brackets, hardware and 10ft. wire and hoods

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