HiLetgo 5pcs LM393 3.3V-5V Soil Moisture Detect Sensor Soil Moistu...

HiLetgo 5pcs LM393 3.3V-5V Soil Moisture Detect Sensor Soil Moisture Sensor Soil Hygrometer Detection for Arduino Automatic Watering System Robot Smart car

• This is a simple moisture sensor can be used to detect soil moisture, when the soil water shortage, the module outputs a high level, whereas the output low.
• Use this sensor to make an automatic watering device that will keep your garden of plants unmanaged.
• Module dual output mode, digital output is simple, more accurate analog output.
• Sensitivity adjustable (Figure blue digital potentiometer adjustment)
• Comparator using LM393 chip, stable job