SJE-Rhombus (S.J. Electro Systems, Inc.) was founded on July 2, 1975 by Steve Johnston. Steve wanted to develop a way to warn Minnesota residents when their septic system holding tank needed pumping. The pioneering efforts of Steve brought forth the first Tank Alert? alarm and Sensor Float? control switch. Today, over 35 years later, SJE-Rhombus has grown into a leading manufacturer of reliable, trouble-free liquid level controls for the water, wastewater and sewage industries ...
read moreThe EZ Series® Duplex control panel is designed to control two alternating 120/208/240V single phase pumps in water and ...
read moreThe EZ Series® Plugger control panel features a built-in high water alarm and receptacle to accept a 120V or 230V pump ...
read moreThe EZ Series® Simplex control panel is designed to control one 120/208/240V single phase pump in water and sewage ...
read moreThe Installer Friendly Series® Single Phase Duplex Demand/TD control panel is designed to control two alternating ...
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