sjeRhombus.com
About sjeRhombus.com
About SJE-Rhombus Controls Integrity In ALL We DoLearn more about SJE-Rhombus by viewing our Great Place to Work Presentation. SJE-Rhombus Controls (S.J. Electro Systems, Inc.) was founded on July 2, 1975 by Steve Johnston. It all began with a quest for developing a reliable means of warning homeowners of sewage overflow. The pioneering efforts of Steve brought forth the first Tank Alert® alarm and Sensor Float® control switch.
