KEHIPI 5PCS MAX30102 Heart Rate Blood Oxygen Sensor Module

Five-pack sensor modules for wearable prototypes

This pack contains five MAX30102 modules that combine a red LED at 660nm and an infrared LED at 880nm with a photodetector and low-noise circuitry. Each board measures heart-rate and blood-oxygen signals through optical reflection and communicates the data over a standard I2C bus. The modules are aimed at makers building finger, earlobe or wrist-worn health monitors with Arduino or STM32 platforms. The chips draw near-zero standby current and can be software-shutdown to preserve battery life.

Check supply voltage and logic level before wiring

The main VIN pin accepts 1.8V to 5V while the internal LED supply runs at 5.0V, so confirm your regulator can deliver that rail. The three-bit pad sets the I2C pull-up voltage; choose 1.8V or 3.3V to match the master controller logic level. Connect SCL and SDA to the corresponding bus lines, add the INT pin if you need interrupt-driven reads, and tie GND to the common ground. The RD and IRD pins are optional and normally left unconnected.

Replaces single-sensor boards when multiple test

Buyers who only need one sensor for a single prototype will find a single-unit listing more economical. This five-piece set is justified when you are populating several wearable nodes at once, running parallel experiments, or keeping spares for a classroom or hackathon. The jump makes sense when the project scope calls for redundant or distributed sensing rather than a one-off proof of concept.