• SJE-Rhombus SES Controls SES Controls for Residential and Commercial Applications
  • SJE-Rhombus Municipal Control PRIMEX Municipal Water Control Solutions
  • SJE-Rhombus Engineered Controls Custom Designed Solutions for Commercial, Municipal and Industrial Applications
  • SJE-Rhombus Embedded Controls Custom Electronic Control Solutions for OEM Applications

News & Events

April 24, 2014
SJE-Rhombus Hires Elmco Group   Read More

April 22, 2014
SJE-Rhombus Expands Oil Detection Line   Read More

April 21, 2014
SJE-Rhombus Introduces New Low Current Control Switch   Read More

More News & Events moredivider

Tank Alert® EZ Alarm System

Overview of the Tank Alert® EZ Alarm System

Indoor/Outdoor Tank Alarm Monitors Two Alarm Conditions


Tank Alert® DUO

Tank Alert® alarms provide audio/visual warning of potential threatening liquid level conditions. Read More Read More



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Welcome to SJE-Rhombus®

Why Choose SJE-Rhombus?

SJE-Rhombus® provides smart solutions to today’s growing environmental challenges. We combine our 35 years of expertise in pump controls with the latest technology to deliver energy efficient, cost-effective products for a wide variety of residential, commercial, municipal, industrial and agricultural applications. 

No matter the application, SJE-Rhombus has a control solution to fit your needs, whether it's a simple float switch or septic alarm system to control panels using embedded circuit board technology for advanced programming and monitoring of your system.  And if we don't have it in our standard catalog, we can design and build a custom solution to meet your exact specifications.

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