Problem: 

Temperature is displayed in Celsius. 


Solution: 


To switch it back to Fahrenheit, please follow these steps. 


1) Thermometer has to be turned OFF. 
2) Push and hold the "Ear" button. 
3) The thermometer will display a "M" in the lower right corner, do NOT let go of the "Ear" button, keep it pushed until you see a "C" flash. 

4) Let go of the "Ear" button and then short press it one more time. The "C" will change to a "F". 

5) Wait until thermometer turns off which will save the Fahrenheit selection.