They do make a 110volt thermostat for things like baseboard heaters, but they will not work for incubation, the differental is to high, it could very up to 6 degrees...depending.
Here is a link to a thermostat that works great for brooders...
http://www.bigappleherp.com/Pages/Product/924100.html#descriptionLink I use this on a 2 foot baseboard heater in my brooder, it works great. I don't have to worry about bulbs or anything burning out, plus I control the amount of red light with a reostat to eliminate pecking.
You can find the complete wafer type assembly online at several different poultry suppliers.