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Founded in 1975, SJE Rhombus is a global leader in water and wastewater control solutions, alarms, and floats, serving residential, commercial, municipal, industrial and agricultural applications with products engineered for reliability, ease of use and high quality. From pump control panels and alarm systems to level monitoring solutions and float switches, the brand offers proven technologies to meet diverse needs and perform in demanding environments.

As the flagship brand of SJE Inc., SJE Rhombus benefits from deep engineering and manufacturing expertise in control systems, with success rooted in quality, innovation and customer satisfaction. Its portfolio is designed to meet the rigorous demands of modern infrastructure and environmental management, ensuring dependable performance in critical applications that protect vital water resources. SJE Rhombus maintains an unwavering commitment to quality through world-class management systems that emphasize reliability, compliance and cost-efficiency, underscored by an industry-leading five-year limited warranty on nearly every catalog product that delivers long-term confidence and value.

Engineered to solve complex control challenges with simplicity and precision, SJE Rhombus solutions are supported by experienced professionals who prioritize performance, safety and usability, whether it’s a float switch for a sump pump, a pressure or level control for a well, or a sophisticated control panel for a municipal lift station. Beyond product excellence, the company fosters a culture of integrity, collaboration and continuous improvement, recognizing employees and partners as essential to shared success.

As part of SJE Inc., the brand draws on a global footprint and a legacy of innovation, remaining steadfast in its mission to advance control technologies that safeguard water systems, reduce downtime, and enhance lives and operations worldwide. Customers gain support, training resources and tailored configuration options.


SJE Rhombus is a leading manufacturer of liquid-level control products including panels, alarms, floats and accessories. They have been servicing the water and wastewater industries since 1975. SJE Rhombus is a brand of SJE, a privately held company headquartered in Detroit Lakes, Minnesota. SJE does business globally from multiple locations across the United States and Asia.

888-342-5753 | info@sjeinc.com | www.sjerhombus.com

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