Invento Pulse Rate Sensor Heartbeat Heart Rate Detector Module for Arduino Electronic Components Electronic Hobby Kit

Pulse rate sensor is used to detect hearbeats. It can be wore on the finger or earlobe and connected to Arduino via cables. It also carries an open-source program to display heart rate via diagrams in real time. It is an optical heart rate sensor integrated with amplyfing circuit and noise-cancellation circuit. Specification: Power supply: 3V~5V