IR Break Beam Sensor - 3mm LEDs

IR Break Beam Sensor - 3mm LEDs

IR Break Beam Sensor - 3mm LEDs




Infrared ray (IR) interruption sensors. 3mm version, works up to 25cm, can be powered with 3.3V or 5V (to get the maximum distance)

Available: 2 available COD: AD2167 Categories: , Tag:
Quantity discounts
1-2 3,23
3-5 3,17
6+ 3,10


Infrared (IR) break-beam sensors are a simple way to detect motion. They work with an emitter side that sends out a beam of human-invisible IR light, then a receiver that is sensitive to that same light. When something passes between the two, its transparent to IR, then the beam is broken and the receiver will let you know.

Compared to PIR sensors, breakbeats are faster and allow better control of where you want to detect the motion. Compared to Sonar modules, they're less expensive. However, you need both monitor and emitter.

This is the 3mm IR version. It works up to 25cm / 10 ″. You can power it from 3.3V or 5V, but 5V will get you better range and what we suggest. The receiver is open collector transistor output which means that you need to pull up resistor if you want to read a digital signal off the signal wire. Most microcontrollers have the ability to turn on a built in pull up resistor. If you do not, connect to 10K resistor between the white wire of the receiver and the red wire. If you want to control a relay or LED, it can sink up to 100mA to ground

Check out our IR breakbeam tutorial for how to get started quickly

We also carry a 5mm version that works for slightly longer distances.

  • Sensing Distance: Approx 25cm / 10 ″
  • Power Voltage: 3.3 - 5.5VDC
  • Emitter Current Draw: 10mA @ 3.3V, 20mA @ 5V
  • Output Current Capability of receiver: 100mA sink
  • Angle Transmitter / Receiver LED: 10 °
  • Response Time:
  • Dimensions: 20mm x 10mm x 8mm / 0.8 ″ x 0.4 ″ x 0.3 ″
  • Cable Length: 234mm / 9.2 ″
  • Weight (of each half): ~ 3g

Additional information

Weight 0.83 lbs
Dimensions 5 × 1 × 3 cm


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