Arduino pulse sensor is used to test the heart rate sensor, students, artists, athletes, creators, game developers or mobile terminals can be developed and heart-related interactive works. Sensors can be worn on the finger or earlobe, can be connected to Arduino via the Internet line. It also has an open-source app program, you can put your real-time heart rate is displayed with the plot. Essence is an integrated optical amplifier and heart rate sensor noise elimination circuit.
Power: 3-5V Diameter: 16mm Magnification: 330 LED Wavelength: 609nm For More Information Please Check the Reference... https://pulsesensor.com/pages/pulse-sensor-amped-arduino-v1dot1