SparkFun Electronics will be closed in observance of memorial day on Monday, May 29th. We will resume normal business hours on Tuesday, May 30th. Any orders placed after 2pm Mountain Time on Friday, May 26th will process and ship out on Tuesday, May 30th.

Creative Commons images are CC BY 2.0

Description: The QRE1113 is a small IR reflectance sensor. This sensor is often used in line following robots because, if it can sense if a surface is white or black.

There are four pins on the QRE1113 - two control the IR emitting LED while the other two are the collector and emitter of a phototransistor. The IR diode has a max forward current of 50mA and operates at 940nm.

Breakout boards with analog and digital outputs are also available.


  • Phototransistor output
  • No contact surface sensing
  • Miniature package
  • SMT gull wing leads


Recommended Products

Customer Comments

  • Hmm, I created a board to use some of these sensors for line sensor, but they can’t see the difference at 1cm from the floor. Has any thing that I can do to see the line at 1cm, or it is things of the sensor. And if has any sensor better for it.


  • Anyone have any idea on eye safety of this? I want to use it as a blink sensor, but I am not too keen on shining invisible light into my eye at a close range :-/

    • Well found some stuff on eye safety http://www.intersil.com/en/products/optoelectronics/ambient-light-sensors/eye-safety.html http://www.intersil.com/content/dam/Intersil/documents/an17/an1737.pdf

      Unfortunately this item doesn’t give any emitted light power info

  • The product ID is wrong “QRE1113” is the ID for the THT part, but I got a bag with the SMD version from a german reseller. The right part description should be “QRE1113GR” with “GR” at the end. This is the SMD version. Please have a look at the datasheet!

    Is there also a THT version available from SparkFun?

  • Take a look at http://www.sparkfun.com/products/246. almost the same device (this is the 1113, that is the 1114), and it is through hole.

  • This + opamp = heartrate monitor!

  • 940 nm, just in case you don’t want to have to dig through the datasheet. Also, slightly longer wavelength than the IrDA standard of 850nm to 900nm.

  • Does anyone have an eagle library with this part?

  • Could this be used as a close range object sensor?

Customer Reviews

No reviews yet.