Feature: 1. Applicability: The controller is developed according to the actual needs of water pumping in home factories and mines. 2. Function: The controller is based on the detection of the pool (water tower) water level to control the high current relay to achieve control. 3. Features: Small size, easy wiring, low power consumption, large switching capacity, strong anti interference, high functional stability. 4. Automatic: Can steadily realize the pool (water tower) when the water shortage automatically open the pump pumping, pumping to full automatically stop the pump. 5. Warm Tip: This product does not need to buy a separate probe, with household electrical wiring can replace the probe. Specification: Item Type: Water Level Controller Module Material: PCB Voltage: 12V Application: Water Level Switch Sensing Controller. Package List: 1 x Sensing Controller Note: With the household wire can be directly sensed, the wire is stripped more than 5 cm, so that it becomes bare wire can contact the water can be directly sensed.Of course, in order to be more durable, water contact area is recommended to use aluminum wire or weld with stainless steel for better effect.