The 79-408 is a motorized, spring-loaded, floating-contact rotary switch from Honeywell. This switch has three functions in one, combining the functions of a limit switch, spring-return switch, and floating-contact switch into a single unit. This switch is most commonly used in the control of boilers, air-conditioning units, furnaces, and other heating and cooling systems. It features silver alloy contacts, a direct-acting SPST operation, a positioning accuracy of +/- 10°, and a pin on the knob for single pole operation. This switch is also UL/CSA certified, so it is safe to use in commercial and industrial applications.