Soil humidity relay module; soil moisture sensor; Arduino robot; smart car

Electrical parameters: Supply voltage: 12VDC input current: more than 100mA Load 250V AC or DC 30V 10A (current below this range can be used) Module description: 1. humidity detection sensor applied to soil; 2. the blue potentiometer modules are for soil moisture threshold adjustment, adjust clockwise, humidity will be under the control of the greater and turning it counterclockwise smaller; 3. because of this module with the time delay function, adjust the humidity value, about every mobility need to wait 5-8 seconds, relay changes in corresponding changes in the Green LED lights, until transferred to meet the requirements.