SJE-Rhombus Model PS11/12 Single Phase, Duplex Motor Contactor Control/Programmable Timed Dosing Control PanelSJE Rhombus Model PS11 12 Control Panel Description Single Phase, Two Independent Motor Contactor Control Programmable Timed Dosing Control Panel The PS11 PS12 Panels provide a reliable means of controlling two separate 120V (PS11) or 208 240V (PS12) single phase pumps (pump chamber and sand filter chamber pumps) in an onsite septic installation. Magnetic motor contactors rated at 20 FLA are used to turn the pumps on and off. Elapsed time meter and