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, you can choose 1.8V or 3.3V according to the pin master voltage. - SCL: I2C bus clock - SDA: Connected to the I2C bus data - INT: MAX30102 chip interrupt pin - RD: MAX30102 chip's RD LED grounding terminal, generally doesn't need to connect. - IRD: MAX30102 chip's IR LED grounding terminal, generally doesn't need to connect. - GND: grounding wire.