Details
Works on fingers, earlobes, and wrists. An integrated glass cover and ambient light suppression circuit ensure reliable readings even in bright environments. Ultra-low standby power (near zero) makes it ideal for battery-powered wearables.
Specs
- Sensor IC: MAX30102
- Measurement: Heart rate + SpO2 (blood oxygen)
- LED wavelengths: 660nm (red) / 880nm (IR)
- Signal type: PPG (light reflection)
- Interface: I2C
- Supply voltage: 1.8V – 5V
- Communication voltage: 1.8V / 3.3V / 5V (selectable via pad)
- Mounting holes: 0.5 × 8.5mm
Pin Definitions
- VIN — Power input (1.8V–5V)
- GND — Ground
- SCL — I2C Clock
- SDA — I2C Data
- INT — Interrupt output
- RD / IRD — LED ground terminals (typically not connected)
- 3-bit pad — Bus pull-up level select (1.8V or 3.3V+)
In the box
- MAX30102 Heart Rate Sensor Module × 1
Related products
- Want more sensors in one go? Check out the Sense-a-tional Fun Pack!
- Need a wearable-friendly controller to pair it with? Try the Adafruit Flora V3.



