Product review (5 stars): How to switch it from Celcius to Fahrenheit.
Good price and works great. Check out this page near the bottom if you have to change it to Fahrenheit. Someone on that page has a fix. I bought 10 mistakingly thinking it had a switch or something to change it to Fahrenheit. You open it up and make a connection accross 2 contacts. I used solder instead of foil on the contacts but it is a simple way to make it a Fahrenheit thermometer. Here is the exact same thermometer with the conversion info. http://www.amazon.com/SODIAL-Digital-Thermometer-Fridges-Freezers/dp/B008MWJK9K