... in use,excellent quality, Mini-booter pump control system for water supplyspecial for small size:0.5HP~1.5HP,1PH 220V,intelligent ... for small pump size:0.5HP~1.5HP,single phase 220V,intelligent constant pressure control..LCD display.Miniature and able to ... cooling fan,prolong service life.Automatic energy-saving function.Abundant protection from under voltage,over voltage,over current,overheat etc.. ...