A:Answer1. Plug in the unit.
2. Rotate the Function Selector Dial so that the display comes on.
3. Hold the Time/Temperature Selector Button (in the center of the lower dial) for 3 seconds.
There will be a short beep as the displayed temperature changes from Celsius to Fahrenheit.
4. Release the Time/Temperature Selector Button.
The same procedure will change the units back to Celsius if desired.