Working voltage:1.8~3.3~5.5V;LED peak wavelength:660nm/880nm;Monitoring signal type:Optical reflection signal (PPG);Communication interface:I2C interface board;Dimension of the reserved assembly hole:0.02x0.33 inch. MAX30102 Integrated Module---An integrated heart rate sensor module that integrates red LED, infrared LED,optical device, photoelectric detector, and low-noise electronic circuits with ambient light suppression. 50v built-in LED power supply---The chip can turn off the module through software, and the standby current is close to zero,maintaining power supply. I2c-compatible communication interface---The I2C-compatible communication interface can transmit the collected data, and is compatible for Arduino,KL25Z for heart rate and blood oxygen calculation. Usage---Wearable device for heart rate and blood oxygen collection. Package includes---5 x MAX30102 heart rate sensor modules.If you have any questions, feel free to tell us. Specification:
LED peak wavelength:660nm/880nm.
LED power supply voltage:3.3~5V.
Detection Signal Type:Optical Reflection Signal (PPG).

Output Signal Interface: I2C Interface.
Communication Interface Voltage:1.8~3.3V~5V
Reserve Mounting Hole Size:0.5x8.5mm/0.02x0.33Inches.

Interface:
VIN:Main power input 1.8V-5V

3-bit pad:
I2C bus pull up level,
(1.8V or 3.3V can be chosen according to the pin master voltage)

SCL:I2C bus clock
SDA:Connects the I2C bus data

INT:MAX30102 chip,interrupt pin
RD:MAX30102 chip,RD LED grounding terminal,(generally no need to connect)
IRD:MAX30102 chip,IR LED grounding terminal,(generally no need to connect)

GND: grounding wire

Package includes:
5pcs x MAX30102 Heart Rate Sensor Module