Gems Sensors & Controls manufactures level switch products including electro-optic liquid level switches, float type level switches, and proximity and pressure switches. The company's switches are for use in a variety of fluids.

Innovative Components manufactures float-type, liquid level switches in three categories: vertical, horizontal and special. The company's vertical switches can be mounted in the top or bottom of a tank, while horizontal switches are used when the top of a tank is not accessible.

Innovative Solutions manufactures float-type level switches including multi-level vertical mount, single-point horizontal mount, and single vertical mount switches. A number of the company's switch models are intended for use in hazardous locations.

Madison manufactures liquid-level, single and multi-point float switches that measure tank levels in various application environments. The company also offers a number of liquid level sensors and an optical level switch.

Strain Measurement Devices manufactures float level switches including multi-level, vertical, and horizontal switches in a variety of metals and plastics. The company also produces temperature level switches and ultrasonic level switches.

Thomas Products manufactures a variety of liquid level switches including multi-level indicator, side mounted, single level or bottom mounted switches. The company's level switches come in bronze, plastic, PVC and stainless steel, and have a maximum operating pressure that ranges from 50 PSI to 750 PSI..

Whitman Control Corp. manufactures liquid level switches that are utilized for monitoring drinking water levels. The company's level switches are also used in the oil and gas industries.