About This Specific Application - Strong power can be used in hot water pressurization like shower, or add a bridge valve to be used in no return pipe system(Bridge valve not included). Smart Flow Switch - Build in compact flow switch can save installation space; Also equipped with run-dry thermal shut off protection; Three Working Modes - MANUAL/kept working; AUTO/only work when any tap is turned on; The switch mode can be adjusted by a knob on the black contrl box Main Technical - Power: 120W; Outlet: 3/4" NPT; Max Flow: 500GPH; Max Head: 30FT; 110V; Installation length:5.1"; Liquid temperature range:32 - 230℉ Features & Material - Super silent, hardly feel it at work; Cast iron pump head, anti-fraying; High flow, low consumption; Overview Brand : BACOENG Color : Black Material : Iron Style : Built-in Auto Flow Switch Power Source : Solar Powered Item Weight : 6.4 Pounds Maximum Flow Rate : 1892.71 Liters Per Hour Maximum Lifting Height : 30 Feet Voltage : 110 Volts Horsepower : 0.13 Horsepower