The Speed Queen 504515 Dryer Cycling Thermostat-Green Label regulates dryer temperature during the drying cycle. It monitors the heat inside the dryer and switches the heating circuit on and off to maintain the selected temperature range. Designed for compatible Speed Queen dryers, this replacement thermostat provides accurate temperature regulation and a proper fit. It is a practical... https://www.hnkparts.com/speed-queen-504515-dryer-cycling-thermostat-green-label-53782/4-504515.html