How do I change my Metene thermometer from Celsius to Fahrenheit?

How do I change my Metene thermometer from Celsius to Fahrenheit?? How do you use a Metene forehead thermometer? https://www.youtube.com/watch?v=hJOoXJYpBSI How do you use a forehead thermometer? Place the sensor head at the center of the forehead. Slowly slide the thermometer across the forehead toward the top of the ear. Keep it in contact with … Continue reading How do I change my Metene thermometer from Celsius to Fahrenheit?