KY-039 Heartbeat Detector Sensor Module


11 in stock

SKU: KY-039 Heartbeat Sensor Module Category:


By Placing your finger between the infrared led and the phototransistor of the sensor, your heartbeat dilates the blood vessels in your finger, which will filter the IR creating a pulsating signal.

It is important is to keep stray light off the photo-transistor as this will add considerable noise to the results.


  • KY-039
  • Voltage : 3v to 5v
  • 5mm Infrared emitter
  • Photo-transistor
  • Pin pitch : 2.54mm
  • Size: 19mm x 15.5mm