temp controlled fan?

[kwirky]

I would just run the fan on a timer. Hell of a lot cheaper, and after about 2 days of tweaking, you could have it exactly how you need it. I run my fan alternating between 15 min on, 15 min off, with it about 30 min off every 45 min or so. Keeps it at a good temperature that way, and way cheaper than a $100+ temperature controller.