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MAX30100 MAX30102 Heart Rate Sensor Module Puls Detection Blood Oxygen Concentration For Arduino 1.8V 3.3V 5V Ultra-Low Power(MAX30102 Black)
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EasyByMall PH Sensor Kit for Arduino with PH Electrode Probe and BNC Module, Wide Range PH0-14, Fast Response for Water Quality Testing
MAX30100 Pulse Oximeter Sensor Module With I2C Interface For Heart Rate Monitoring And Finger Tip Oximetry Development For Arduino