This is a simple moisture sensor that can be used to detect soil moisture. When the soil lacks water, the module emits a high level and inversely. Use this sensor to create an automatic watering device that allows your garden plants not to be managed.
The sensitivity is adjustable (setting the blue digital potentiometer on the figure)
The module has a dual output mode, the digital output is simple and the analog output is more accurate.
Fixed bolt holes for easy installation
Power indicator (red) and digital switch output indicator (green)