KY-039 Finger Detection Heartbeat Measuring Sensor Module

SKU: VM00904

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This component is ideally suited to adding heartbeat sensing to your project. KY-039  uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse. 

Technical Specification:

  • Chipset: KY-039
  • Voltage Input: 3V - 5V
  • Size: 16mm*19mm*6mm (L*W*H)


  • Use IR LED and an optical transistor to detect pulsation in fingers
  • Small and Compact module
  • Easy to use


  • Medical
  • Home lightning

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