Grab'eM HYGROMETER Sensor Module(Blue)

This is a simple to use water sensor, that can be used to detect soil moisture content. It has both digital and anlog ouputs and can be directly connected to an Arduino (or similar development board). The sensor allows the user to set a predefined threshold using the onboard potentiometer. The digital output goes high when the measured soil moisture increases more than the threshold value. This digital ouput can be directly read from an Arduino or a similar microcontroller.Use this sensor to detect soil moisture in automated garden watering projects so that the plants in your garden without people to manage, etc.