Retired Product

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SKU: SEN-055 - Mfg Part Number: ITR-9608


An opto-interrupter is like a tiny trip line, when something solid passes between the emitter and the receiver it is detectable as a change in the digital output. These are great for making very low cost rotary encoders and optical end stops.

To use this sensor simply connect the LED Anode to 5VDC and the Cathode to ground through a ~180 Ohm resistor. On the receiver side connect the Collector to 5VDC and the Emitter to a ~1K Ohm resistor (going to ground) as well as your Arduino or other microcontroller digital input.


  • Ideal for non-contact end stops
  • Easy to connect


Out of stock

SKU: SEN-055.
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Additional information

Weight 1 g


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