Relay Controlled Soil Moisture Sensor, Voltage: 12V DC ; Input Current: More than 100MA Load : 250V 10A AC OR 30V 10A DC, Threshold may be adjusted via the on Board Potentiometer.
When the soil moisture is lower than the set humidity level , it triggers the relay , to control and start a pump or tap.
Once the desired humidity level has been achieved, once again the relay is triggerred and the pump or watering device is stopped.
