I am getting ready to prepare a heated outside sleeping hut of some kind since I now have a decent sized leopard and was wondering if someone can recommend a decent thermostat/heat regulator of some kind. I was planning on going with a combination of a timed heat lap during the day and a temp controlled ceramic heating element, but would prefer more control for the ceramic element than just a timer. Something that would limit the temperature range, turning the heater on/off as appropriate would be best. Suggestions in the U.S. for this type of device?