Pulse Rate Heart Sensor

It essentially combines a simple optical heart rate sensor with amplification and noise cancellation circuitry making it fast and easy to get reliable pulse readings. Pulse sensor amped works with either a 3V or 5V Arduino. Features: plug and play type sensor, operating voltage: +5V or +3.3V, current consumption: 4mA, diameter: 0.625″, thickness: 0.125″ thick, Applications: sleep tracking anxiety monitoring remote patient monitoring/alarm system health bands advanced gaming consoles.