The Whadda MAX30102 heart monitor measurement sensor module allows you to easily add heart-rate and oxygen saturation monitoring to any Arduino® compatible board. The module uses a standard I²C interface. It is advised to always securely mount the sensor to your finger when measuring using a rubber band to get stable readings.
Features:

1. measures heart rate and oxygen saturation levels

Specifications:

1. supply voltage: 5 V DC
2. working current: 60 mA
3. max. power: 0,3 W
4. working temperature range: -25 - +65 °C
5. interface connector: standard 4-pin pin header
6. dimensions (W x L x H): 20,0 x 35,2 x 7,2 mm
7. weight: 2,5 g

ce_rohs_open.pdf