G'day Martin,

We havent stocked these for years, and they are now discontinued, so I'll do my best to remember!  I believe its dependant on the clock setting. The 24hr time automatically defaults to Fahrenheit, whilst the 12hr time automatically defaults to Celcius.  You should be able to hold down the "Set" button to cycles through the different clock options.

G'day Peter,

The Wireless Fridge Thermometer and Clock only displays the temerature but can't actually control the fridge sorry. 

G'day Garry, 

I've just spoken to Evakool, and they've told me that the Wireless Fridge Thermometer and Clock is designed to be used with just one unit at a time.

If you use it with two units side by side it will only read one of them, and it's likely you're not going to be able to tell which if that makes sense.