I was searching for a nice digital thermometer for measuring indoors and
outdoors temperature for the Westy. I looked thru Oregon Scientific and
Lacrosse Technology but didn't find one that meet my need. I then found
this Radio Shack model 63-1039 which is intended for auto use and it
turned out very nice and has the bonus function of measuring battery
voltage as well as a cute level indicator. It also have min/max as well
as ice alert.

Here is the Radio Shack link:
http://www.radioshack.com/product.asp?catalog_name=CTLG&category_name=CT
LG_010_004_001_000&product_id=63-1039

This unit is ideal for those who add the aux battery but haven't a way
to monitor it's level.

If you don't care for the exterior temperature you can use the remote
temperature for monitor the refrigerator inside temperature.

I have more information on my site including some bench tests I did and
my planned installation:

http://gipsyflies.home.comcast.net/thermometer.htm

- Vince

http://gipsyflies.home.comcast.net
1989 Vanagon GL Camper
1993 Mazda Miata
1996 Land Rover Discovery
2005 Mini Cooper S (almost here)