How To Change Infrared Thermometer From Celsius To Fahrenheit Model Fc Ir200. Hold thermometer to your forehead and press large button on back, it will beep, turn green and read your temperature. Hold thermometer to your forehead and press large button on back, it will beep, turn green and read your temperature.

23.method 4 to change infrared thermometer from ℃ to ℉ if you have a beurer ir thermometer or other infrared thermometer, you can perform the steps below to change the unit from celsius to fahrenheit. Hold thermometer to your forehead and press large button on back, it will beep, turn green and read your temperature. The default temperature unit of the infrared thermometer is.