What do you use for a refrigerator Thermometer ?

I have a thermometer that was formerly one that was stuck on the outside of a window on our old coach. I is a digital thermometer that you can see through and it is only about an eighth inch thick. I also has a 24 hour memory. It is thin enough to slip in to the top door shelf. I like it because I not only get the current temp, but I can see the high and low for the day. I have found that the little fridge does a good job of holding temp!

John