How do you change a Mabis ear thermometer from Celsius to Fahrenheit?

Answer 1

while holding the front button click on the smaller button on the back. My dd was playing with it and changed it unwittingly, I tinkered with it until it started switched back and the is what worked,

Answer 2

To change a Mabis ear thermometer from Celsius to Fahrenheit, typically you need to power off the device first. Then, press and hold the power button for a few seconds until the display shows either "°F" or "°C". Use the up or down buttons to switch between the two temperature scales. Finally, press the power button again to save your selection.