Heart Rate Pulse Sensor Module.Pulse Sensor can be put on the finger or earlobe, through interconnected line can be connected to the Arduino, to test the heart rate t also has an open source app, can real time your heart rate graph display.:
Features:
- The power supply voltage: 3.3V ~ 5 v
- Package Includes: 1x Pulse Sensor Module
- Essence is a integrated optical amplifying circuit
- noise eliminating circuit heart rate sensor.