Features: 1.Professional Design: Automatic liquid level sensing control module is carefully developed according to the actual needs of water pumping in home factories and mines. 2.Control Relay: 12V DC water level controller module is based on the detection of water level in the pool (water tower) to control the high current relay to achieve control. 3.Superior Performance: Water level controller module has the characteristics of small size, easy wiring, small power consumption, large switching capacity, strong anti?interference, and high functional stability. 4.Automatic Control: Level controller module can steadily realize the pool (water tower) is short of water automatically turn on the pump to pump water, pump to full automatically stop the pump. 5.Working Principle: The upper s in z under x probe leave the water relay suction closed, the upper s in z under x probe soak to the water when the relay is disconnected. specification:Item Type: Water Level Controller Module Material: PCB Power Supply Voltage: DC 12V Control Motor Power: Recommended Within 1000W PackageList:1 x WaterLevelControllerModule