Compact Engineering Inc. designs OEM flow switches, OEM level switches, and OEM temperature switches. The flow switches are used for water, air, and electronics applications, and are available as angle body, wire receptacle, low flow, straight body, and indicator types. The temperature switches can serve as low temperature switches or high temperature switches in six narrow differential, preset set points.

United Electric Controls Inc. produces a line of OEM switches including compact cylindrical pressure switches, pressure and differential pressure switches, pressure and temperature switches, and temperature switches. The various switches feature NEMA 1 or 4 enclosures or open frame construction, and adjustable ranges of 4 to 7500 psi, 30" Hg VAC to 90 psi, 30" Hg VAC to 6000 psi, -130 to 650F, or 30" Hg VAC to 300 psi.