> FYI, I was guesstimating at the size of mine.  It's likely the same 1.5"
> one.  I bought it at Radio Shack in 2005.

I bought one of these.  Then I looked at installing it.  Pull
the fridge, drill a hole through the case for the wire, wire
it in, etc, etc.

I bought a Fridgemate and went camping.  You should do the same.  ;-)

BTW--This is year 3+ on the first set of batteries, so they
last longer than "one month" in my experience.

Richard