VEVOR Electric Pool Heater 11KW 240V Swimming Pool Electric Heater Water Bath Heater Electric Digital fit for Thermostat, fit for Max 1981 Gallon Pool Equipment,Note:You Must Wire This Item YourselfHigh-Quality MaterialLCD Display & IndicatorsAutomatic ModulationSelf-Checking FunctionEffortless InstallationMultipurpose UseInterface Diameter: 1.96 inch/50 mm,Capacity: Less than 1981 Gallon/ 7.