Dave its an ICM low ambient controller. you can see youtube vids of it. the only thing you would need to do is replace the resister With one that would put you in your temp ranges. Although the one that comes with it may be close enough.
Hmm, interesting. Looks like the ICM325HN or 326HN could work. Where can I find for $40? best internet price is just under $100...
For $40 I want to play