SJE Rhombus is a leading control solutions provider, combining over 40 years of expertise in pump controls with the latest te ... chnology to deliver energy efficient, cost-effective products for a wide variety of residential, commercial, municipal, industrial and agricultural applications world-wide. Our product line includes control panels (standard and custom engineered), variable frequency drives, embedded controls using printed circuit board technology, tank alarms, pump and control switches, and accessories. We are proud to be 100% employee owned and were named the 2017 National Employee Owned Company of the Year. SJE Rhombus is a trademark of SJE. read more