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SparkFun SEN-00241 Infrared Emitters and Detectors Pair

4.75 out of 5 based on 4 customer ratings
(4 customer reviews )

£1.69 inc VAT

(£1.41 Exc. VAT)

4 in stock

  • Brand: SparkFun
  • Part Number: SEN-00241
  • SKU: PPSEN-00241

Categories: ,

SparkFun SEN-00241 Infrared Emitters and Detectors Pair

Side-looking Infrared Emitters and IR Detectors. These simple devices operate at 940nm and work well for generic IR systems including remote control and touch-less object sensing. Using a simple ADC on any microcontroller will allow variable readings to be collected from the detector. The emitter is driven up to 50mA with a current limiting resistor as with any LED device. The detect is a NPN transistor that is biased by incoming IR light.


  • IR Emitter (Yellow or Black dot) or the internal layout matches the third image above.
  • IR Detector (Red dot)


Sold as a pair, with one Emitter and one Detector.

Additional information

Weight 0.0006 kg

Part Number






Customers' review

Rated 4.75 out of 5 stars
4 reviews
5 stars 3 75 %
4 stars 1 25 %
3 stars 0 0 %
2 stars 0 0 %
1 star 0 0 %

4 reviews for SparkFun SEN-00241 Infrared Emitters and Detectors Pair

    5 out of 5

    These units work very reliably and are very easy to use. I haven't tried the free sweets yet!

  2. 5 out of 5

    I'd found the IR Tx/Rx pair from an American company, but was much happier to find a UK based reseller.
    The IR pair were just what I needed to mend my Roomba. Even with my ham-fisted soldering.
    And to top it off the package came with a small bag of sweets(no idea why) and they were very tasty :D.
    First class post cost more than the components, but it still works out good value.

  3. 4 out of 5

    Pretty good, though due to the design the IR does spread out so keep that in mind. Oh and keep a little note of which is the emitter and detector close by, found myself mixing them up often but that may just be me :P

  4. 5 out of 5

    I had to make an infra-red photo-interrupter for a tacho I'm building. This pair were made for each other, are small, very precise and work beautifully - very easy to build into a reliable and functional system.For very precise work, I rate these two as

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