Description:The probe can be inserted directly into the soil. It is a digital display of soil moisture. When the humidity is below the set value, the pump starts watering when the humidity reaches the set value to stop watering. The operation is very simple. This is intelligent humanization. Parameters:Product Name: Soil Moisture Controller Module Model: XH - M214 Supply Voltage: DC 12 V Output: Output Switch Humidity Range: 20-99%RH Control Accuracy: 1% RH Control Rate: 10 AWnet Weight: About 28g Size: 52*43*16mm Using Note: Please follow the description wiring diagram. You can choose the appropriate wiring mode according to the load voltage you are using1gt;. F0 initial humidity setting (solenoid valve or pump humidity starts to work)Press the "SET" button to display "F0" and press the "SET" button to display the initial humidity, and press the +/ button to "set" the humidity value 2gt;. F1 setting stop humidity (the humidity of the solenoid valve or pump stops working)Press the +/- button to enter "F1", press the "SET" button to display the stop humidity value, and press the +/ button to set the humidity value3gt;. F2 Humidity CorrectionNormal use without correction error. Adjusting values by using multiple modules at the same time promotes a unified management operation. Note:The item color displayed in photos may vary slightly when showing on your computer monitor since monitors are not calibrated same. Please allow 1-3mm slight deviation due to manual measurement. Package Included:1pc Digital Humidity Controller