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Seco-Larm E-964-S50TB Mini Single Photobeam Sensor, 50ft

Seco-LarmSKU: E-964-S50TB

Sale price$21.00
Usually ships within 3-5 business days

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The E-964-S50TB is a simple, easy-to-use, and easy-to-install single-beam infrared motion sensor with 4 selectable frequencies. The device easily installs almost anywhere to provide an invisible beam that, when broken, sends a signal to activate a light, beeper, or other devices. This makes the device perfect for use as part of an access control system, a door or window monitor, a retail store customer alert, or many other places where the user needs to know that someone has entered a specific room or building or other protected areas. The E-964-S50TB is weather-proof, and comes with a built-in AGC control circuit that helps to filter out possible disturbance caused by local lighting conditions.

  • 4 selectable frequencies to reduce interference
  • Up to 50ft (15m) sensing distance
  • Small size for a less conspicuous installation
  • Simple to install
  • Built-in AGC control to filter out lighting disturbances
  • Signal strength indicator for easier alignment
  • LED indicators for power, signal strength, and trigger
  • Weatherproof for outdoor as well as indoor use (IP65)
  • Mounting hardware included



Type IR Multi-Frequency Single Beam Sensor
Current Draw Transmitter- 15mA@12VDC, Receiver- 30mA@12VDC
Number of Beam Frequencies 4
Number of Beams 1
Sensing Range Up to 50ft (15m)
Infrared LED Wavelength 940nm
Operating Voltage 10~24VDC
Interupt Speed 50ms
LED Beam Spread Angle Approximately ±10°
LEDs – Red Indicates transmitter and receiver are not aligned or beam is broken (Alarm)
LEDs – Yellow Dims/off when receiver’s signal is weak / off when beam is broken
LEDs – Green Indicates connected to power
Output NO/NC relay (set by jumper, default is N.C.) 0.5A@30VAC/VDC
Operating Humidity 0~95%
Operating Temperature -13°~131°F (-25°~55°C)
Dimensions 3-11/16″ x 2-3/8″ x 1-13/16″ (94 x 60 x 46 mm)
Weight 2.6-oz (74g)
Enclosure Weatherproof IP65



Sensor does not detect the object
  • Object may have a reflective surface which confuses the sensor. Try changing the angle of the sensor
Green power LED does not turn on
  • Ensure that the power is connected
Yellow LED or Red LED does not turn off
  • Clean the transmitter and receiver sensors with a damp (not wet) cloth
  • Readjust the alignment of the transmitter and receiver
  • Ensure that both the receiver and transmitter are set to the same frequency
Red LED lights when object is detected, but the output device is not activated
  • Check the wiring between the receiver and the output device for continuity

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