Profile: SJE-Rhombus provides water/waste water control solutions. We deal with drip irrigation panels, level controllers and engineered panels. The engineered control panels have features such as variable frequency drives, reduced voltage starters, programmable logic controllers and battery-backed alarm systems. Our wide-angle pump switches directly control pumps from 1/2 HP at 120 VAC, up to 3 HP at 250 VAC, in non-potable water and sewage applications. They are available in various cord lengths.