Soil Moisture Sensor Module Automatic Watering System for Arduino AU
Description: Using the company's high-quality soil sensors do detect soil moisture , the surface of nickel plated , has widened the induction area can improve conductivity, prevent contact with the soil rust problems and prolong life ; When two products can be a wide range of soil moisture control , regulation and control by potentiometer corresponding threshold , the humidity is below the set value , DO output high , higher than the set value , DO output low ; Using LM393 comparator chip , stable Operating Voltage 3.3V-5V 5. Has a fixed bolt holes for easy installation 6. PCB Size : 3.2cm * 1.4m Wiring instructions: ( 4 -wire ) 1. VCC external 3.3V-5V 2. GND GND External 3. DO small board digital output interfaces ( 0 and 1 ) 4. AO analog output vo.
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