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KY 039 Finger Heartbeat Detection Sensor 10K Trimpot Trimmer Potentiometer (Pack of 5) I2C is preferred for simple I2C is preferred for simple prototyping and breadboard applications due to fewer required connections 5 GHz RAM 2GB LPDDR4 3200 SDRAM Connectivity 2 7 day returns on manufacturing defects only with full refund or replacement Whether you are a hobbyist
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