Thermostats are an external unit and not built in to anything. They come with a probe that you attach to the heat source so that the heat source can be regulated. RBI has some good ones: http://www.reptilebasics.com/Thermostats-p-1-c-250.html.

You could also maybe use a radiant heat panel for heating (http://www.reptilebasics.com/RBI-Rad...p-1-c-283.html). These are overhead units and heat very well, bump ambient temps, and do not dry out the air.