1st off I've found idea's in the archives but no name brands. I'm setting up a chest freezer to hold roughly 4000 beetles this year. i have a very old well insulated freezer that I'm setting up an air exchange system in, (that part i have figured out) but when it comes to picking the right thermostat to use to control my ceramic heat emitter i cant quite come to a conclusion on whats a reliable unit to buy. The hope is to have the unit inside the top of the freezer due to it could have to go outside, could this cause as malfunctions of the thermostat? Any and all help on what you would recommend to use is greatly appreciated and the $ factor isn't there if I'm getting a reliable thermostat that will last. THANKS!