Arduino Heartbeat Finger Pulse Meter Sensor Module KY-039

The Finger Heart Rate Monitor Sensor is a sensor that allows you to measure heart rate using an analog pin. It consists of a LED and a photo transistor. Since the photo transistor's resistance changes depending on blood movement, the pulse can be easily measured this way. However, it is very difficult to get 100% accurate values with this sensor. An approximate heart rate can be measured.

Finger Pulse Meter Sensor Technical Specifications:

• Operating Voltage: 2.7V - 5.5V
• Frequency: 37.9Khz
• Size: 6.4 x 7.4 x 5.1mm