Electromechanical Temperature Controllers are just part of a wide range of products offered by Fenwal. A complete line of rugged, precise, dependable electromechanical temperature controllers, come in wide variety of temperature ranges. These electromechanical temperature controllers are available in many different probe lengths and mounting configurations to accommodate any application. For decades, Fenwal electromechanical temperature controllers have proven themselves in the most demanding applications. The THERMOSWITCH^® electromechanical temperature controller provides a number of features, including fast response, close control, extreme sensitivity and vibration resistant construction. In addition, the controller is a component recognized by Underwriters Laboratory (UL) and the Canadian Standards Association (CSA).

Series 20000, 21000, 22000: This series of controllers provide full 15A capability in either single or dual switch configurations. The discrete switch action makes the device suitable for dry-contact applications or switching of DC logic signals. Another popular electromechanical temperature controllers are the Surface Mount THERMOSWITCH, Series 30000. Also based on the differential expansion of metals principle, an increase in temperature causes the stainless steel outer case of the Surface Mounting THERMOSWITCH controller to expand at a greater rate than the internal bridge assembly.