This is a MAX30102 based pulse oximetry and heart-rate monitor breakout board. It includes internal LEDs, photodetectors, optical elements, and low-noise electronics

with ambient light rejection. The MAX30102 provides a complete system solution to ease the design-in process for mobile and wearable devices.

The MAX30102 operates on a single 1.8V power supply  and a separate 3.3V power supply for the internal LEDs. Communication is through a standard I2C-compatible interface. The module can be shut down through software with zero standby current, allowing the power rails to remain powered at all times.

It is widely used in wearable devices, fitness assistant devices, smartphones and tables.

Specifications:

• LED Peak Wavelength: 660nm/880nm
• LED Supply Voltage: 3.3~5V
• Interface: I2C Interface
• Operating Temperature Range: -40°C to +85°C
• Dimension: 20.3 x 15.2mm
• Weight: 1.1g