Finger Heartbeat Sensor Module



The KY-039 Heartbeat Detector uses a very high resistance resistor R1, because most of the light through the finger is absorbed, it is desirable that the phototransistor is sensitive enough. The most important is to keep the shield stray light into the phototransistor. For home lighting that is particularly important because the lights at home mostly based 50HZ or 60HZ fluctuate, so faint heartbeat will add considerable noise.


  • 16 x 116 x 3mm (l x w x h)
  • IR Emitter and Receiver
  • 3 – 5V DC Input
  • M2 Mounting holes (centres 10mm apart)
  • Designed to be compatible with standard 2.54mm sockets

Package Included:

1 x Finger Heartbeat Sensor Module

17 in stock