Defrost Thermostat. 120v-240v - Fits American Fridge Freezers Amana, Maytag Admiral, General Electric, Westinghouse and other American fridge freezers. Temp 48-22 f so works within range of most American fridge freezer brands. Butt Ends can be cut and reconnected safely if you need. Clips onto freezer evaporator. Controls length of time the defrost heater stays on for.