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Power LED indicator
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1 Channel Audio Amplifier Board
that’s the 2 poles with a RED and a BLACK lead
Hr202 Humidity Sensor Sensor signal amplifier Power LED indicatorHR202 is a new kind of humidity sensitive resistor made from organic macromolecule materials, it can be used in occasions like hospitals, storage, workshop, textile industry, tobaccos, pharmaceutical field, meteorology, etc. The HR202 Humidity sensor can be applied to the storage compartment, indoor air quality control, building automation, medical, industrial control systems a wide range of applications and research fields. Easy to interface with
