I bought one similar to this one at WalMart a couple of years ago. I put the "outside" sensor in the refrigerator. Nice to know what temp the beverages are being kept
I put the receiver part in my tow vehicle to monitor temperatures of the freezer, as I don't usually tow with the fridge
on (I have a two-way fridge) - don't want the 'skinny cows' to melt!