The heated aluminum is smooth and flat, ensuring a uniform surface temperature； This device has the following user-friendly design features: A. Celsius/Fahrenheit temperature display:Designed to meet the market needs of different regions, the temperature display function can be set to display either Celsius or Fahrenheit, depending on local practices.B.Temperature correction feature；The surface area of the aluminum being relatively large, its temperature may vary slightly in response to large changes in ambient temperature. The temperature correction feature compensates for this potential discrepancy by correcting the temperature within the following range: -50 ℃ – +50 ℃.