ITEM NAME:MAX30100 Heart Rate Sensor Oximeter Pulse Pulsesensor Module For Arduino PI WSZ Descriptio n Descriptions ï ¼Å¡ 100% brand new and high quality MAX30100 Heart-Rate Oximeter Pulse Sensor Pulsesensor Module Features ï ¼Å¡ Material: PCB Color: as picture show size:30 * 20 mm MAX30100: fully integrated optical biosensor, contains two leds, photoelectric detector, the light of the optimized AFE module and low noise, is the smallest size, low power consumption of pulse blood oxygen and heart rate measurement scheme. Package included: 1* MAX30100 heart rate sensor NOTE : Please allow a little size error due to manual measurement.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. We offer you what you need! MAX30100 Heart Rate Oximeter Pulse Sensor Pulsesensor Module.1 MAX30100 heart rate sensor. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. We'd like to settle any problem in a friendly manner.