Heart beat sensor for Arduino

The pulse sensor is used to test the heart rate sensor, students, artists, athletes, creator, game developer, or mobile terminal can develop interactive work related to heart rate.
It also has an open-source app, can real-time your heart rate graph display.
English Manual / Spec: Yes
The download link: https://pan.baidu.com/s/1cxoSK2BiJF_Q0n4FkzQmEg ; The extraction code: xwl9
General:
Quantity: 1 piece
Material: PCB
Specification:
Application: Heart Rate Pulse Sensor
Working Voltage 3~5V
Packing List:
1 x Pulse sensor module
1 x Cable