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It has an NPN transistor pull-down output
com/curiouselectric/solarart
so accurate wind speeds can be measured
Coupling modes include DC / AC / GND
Firmware is pre-uploaded so you can get up and running quickly
Soil Moisture Sensor Vintage It has an NPN transistorThis is a capacitative soil moisture sensor. You can connect it to an analog pin of your Arduino or other microcontroller to get a reading of the soil moisture and use it to measure and monitor watering levels. Great for your intelligent automated garden system. Being capacitative the unit will not corrode when in contact with moisture for long periods (as resistive sensors will). It has an on board voltage regulator, so it can be used with 3. 3V or
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