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

Wiring ( 4 -wire )：
1）VCC external 3.3V-5V
2）GND External
3）DO small board digital output interfaces ( 0 and 1 )
4）AO analog output voltage of small plates

Instruction:
1.Sensor for detecting moisture in the soil
2.Sodule is the blue potentiometer to adjust the threshold for soil moisture , clockwise adjustment, regulate humidity will be bigger, smaller counter-clockwise
3.Digital outputs D0 will also be immediately connected with the microcontroller through the microcontroller to detect low and high , thereby detecting soil moisture
4.Small plates AO analog output modules will also be connected and AD through the AD converter , you’ll get a more accurate value of soil moisture
5.Operating Voltage 3.3V-5V
6.Has a fixed bolt holes for simple installation
7.PCB Size : 3.2cm * 1.4m

Package Included:
5*LM393 Soil Moisture Sensor

It is a simple moisture sensor can be utilized 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 to be able to 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 the use of LM393 chip, stable job