The Reznor 50418 Auto Limit Switch 125°F-145°F is a reliable temperature control device designed for use in Reznor unit heaters and other HVAC heating systems. It automatically regulates the system’s temperature by activating or shutting off the heating element when preset temperature limits are reached, ensuring safe and efficient operation. https://www.partshnc.com/limit-switch-for-reznor-parts-50418