IR Break Beam Sensor - 3mm LEDs

IR Break Beam Sensor - 3mm LEDs
Review score
4.5 / 5.0
Item number53624
... Pieces in stock Need a larger number? Shipped from  € 25 - United States
Hot item!This week there are 12 pieces sold.
Sold per piece
€ 3,30
Add to cart
  • Buy 10 pieces for € 3,15 per piece5% discount
  • Buy 25 pieces for € 2,95 per piece11% discount
  • Buy 50 pieces for € 2,80 per piece15% discount
  • Buy 100 pieces for € 2,60 per piece21% discount
  • Buy 500 pieces for € 2,45 per piece26% discount
+ + =
Frequently bought togetherTotal price:€ 3,30Add to cart


Infrared (IR) break-beam sensors are a simple way to detect motion. They work by having an emitter side that sends out a beam of human-invisible IR light, then a receiver across the way which is sensitive to that same light. When something passes between the two, and its not transparent to IR, then the 'beam is broken' and the receiver will let you know.
Compared to PIR sensors, breakbeams are faster and allow better control of where you want to detect the motion. Compared to Sonar modules, they're less expensive. However, you do need both emitter and receiver on opposite sides of the area you want to monitor.
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 is what we suggest. The receiver is open collector transistor output which means that you do need a 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 a 10K resistor between the white wire of the receiver and the red wire. If you want to control a relay or LED or whatever, it can sink up to 100mA to ground.
Suggest adaptation


Question and answer

Q The Netherlands Guus van de WouwCan I control a bistable relay with this ir sensor? Think of train detection and driving a level crossing. Answer this question


5 stars
Does exactly what it should do! Good value for money.
Placed on 
The Netherlands
4 stars
Placed on 

IR Break Beam Sensor - 3mm LEDs Click a star to leave your review

Other customers also viewed or purchased

Related blogs

Recently viewed