Authorized Seco-Larm Reseller

Seco-Larm E-931-S33PRGQ Polarized Reflective Photoelectric IR Beam Sensor, 33ft, ETL

Seco-LarmSKU: E-931-S33PRGQ

Sale price$76.14
Usually ships within 3-5 business days
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Call Us: 718-435-2800


The E-931-S33PRGQ 33ft Polarized Reflective Photoelectric Beam Sensor provides reliable detection of shiny objects that could be missed by a non-polarized sensor.

  • Polarized sensor is immune to shiny objects: triggers only when correctly reflected light is detected
  • Weatherproof (IP55)
  • Anti-condensation housing
  • 12-30V DC/AC 60Hz, 100mA
  • Up to 33ft (10m) sensing range
  • Round reflector, Diameter: 3-1/4″ (82mm)
  • Form C relay: 500mA@30VAC/VDC
  • Beam status LED
  • Compact size: 4-13/16″x2-3/8″x2-7/16″ (122x60x62mm)
  • N.C. Tamper switch: 500mA@30VAC/VDC
  • Monitored Outputs:
    • N.C.
    • 10kΩ Resistor
  • Hood included for both sensor and reflector

Typical Applications

  • Sensor for garage doors, outdoor gates or overhead doors
  • Sensor for industrial automation to detect objects on manufacturing line



Type Polarized reflective photoelectric beam sensor
Current Draw Standby- 55mA@12VDC, Active- 40mA@12VDC
Sensing Range Up to 33′ (10m)
Operating Voltage 12-30V DC/AC 60Hz, 100mA
Reaction time 10ms
IP Rating Weatherproof IP55
Light Source IR LED/Wavelength 740nm
LEDs – Red Solid, No beam signal, triggered
LEDs – Green Solid, Good beam signal, properly aligned
LEDs Alternating flash- Poor beam signal
Alarm Output SPDT relay output (NO/NC/COM)
Switching Capacity 500mA@30VAC/VDC
Tamper Switch N.C., 500mA@30VAC/VDC
Operating Temperature -4º~131º F (-20º~55º C)
Enclosure IP55 Waterproof



Sensor does not detect the object Change the angle of the sensor or readjust the sensitivity setting
The beam sensor LED will not turn green -Clean the sensor and reflector with a damp (not wet) cloth


-Adjust the reflector and/or sensor for proper alignment

Beam sensor LED lights when object is detected, but there is no output Check wiring between the sensor and local alarm device

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