How to switch to Fahrenheit or Celsius
Inside the battery compartment is a small black slide switch you can toggle between C or F to change the read-out mode.

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Battery Type
This unit uses one 357/LR44 battery.

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Three dashes are appearing on the display
Remove the battery from the thermometer for 90 seconds and reinstall it to see if the power reset will help. If the issue persists, please contact our support team to inquire about a replacement unit.