Feature:1. Water level switch can be used for automatic drainage in pools, garages, basements and flooded areas.2. Liquid sensor controller keeps powerful anti-jamming function and high stability.3. This DIY sensor module kit turns on automatically when you can keep the swimming pool pump (water tower) stable. The pump automatically stops pumping to the maximum extent.4. Developed based on the real needs of pumping water from factories and homes. Water level sensors are based on the detection (water tower) to control the level of high current relay to achieve control.5. With simple wiring, water level switch keeps low power consumption and large switching volume.Specification:Item Type: Water level switchMaterial: Electrical componentsVoltage: 12VDCCharging Voltage: AC <250V DC <30VCharging Power: 10A.Package List:1 x Water Liquid Level Controller