Feature:1. Making the aquarium/water tower automatically open the pump when lack of water, automatically stop the pump(solenoid valve) when full of water.2. Working Principle: When the water level is lower than the \"Low level\", the water pump starts to supply water to the water tower; when the water level is higher than the \"High level\", the water pump stops supplying water.3. Maximum load of 10A / 250V AC, 10A / 125V AC, 10A / 30V DC, 10A / 28V DC, 10A / 12V DC.4. With compact size, high switching capacity, simple wiring, high stability and strong anti-interference function.5. Can be applied for domestic water tower, aquarium water changer, conducting liquid autocontrol system, auto feeder\u0026waterer, solenoid valve water pump, drainage control, etc.Specification:The water level controller module is convenient for the drainage control of your home.Features:Making the aquarium/water tower automatically open the pump when lack of water, automatically stop the pump(solenoid valve) when full of water.Working Principle: When the water level is lower than the "Low level", the water pump starts to supply water to the water tower; when the water level is higher than the "High level", the water pump stops supplying water.Maximum load of 10A / 250V AC, 10A / 125V AC, 10A / 30V DC, 10A / 28V DC, 10A / 12V DC.With compact size, high switching capacity, simple wiring, high stability and strong anti-interference function.Can be applied for domestic water tower, aquarium water changer, conducting liquid autocontrol system, auto feeder&waterer, solenoid valve water pump, drainage control, etc. Note:*This product does not require purchasing a separate probe which can be replaced with a household wire.*For safety, use an AC/DC power supply with good isolation.Specifications:Model: LC25A01Material: FR4Working voltage: DC 12-15V(AC 9-12V)Standby current 10MAWorking current 40MAMaximum load: 10A / 250VAC, 10A / 125VAC, 10A / 30VDC, 10A / 28VDC, 10A / 12VDCItem Size: 5.4*2.7*2cm / 2.12*1.06*0.78inPackage Size: 6*3*3cm / 2.36*1.18*1.18inItem Weight: 24g / 0.84ozPackage Weight: 26g / 0.91ozPacking List:1 * Controller ModulePackage List:1 * Controller Module