This ​snapping disc thermostat switches​ will automatically ​turn ON your fireplaces blower fan when it reaches 120℉ ( + / 5℉) and ​ turn OFF your fireplaces blower fan when it reaches 105℉ ( + / 5℉), ensuring your fan operates only when needed Suitable for ​​fireplaces, Wood stove, Greenhouse cooling, refrigerator cooling, Solar water heaters, Wall & floor furnaces, and various other heating appliances The snapping disc thermostat is designed to withstand ​environmental temperatures up to 350°F, making it suitable for high-heat applications Builted to last, the temperature switches will last for ​over 100, 000 operations​ under normal use, offering long-term durability and consistent The ​fan control switches is suitable for use with ​up to 250V and 25A resistive loads, ensuring and reliability in your home setup