Nope, no thermostat yet-it's been ordered and should arrive soon. They were out the day I purchased my snake, and so was the other store near my house. I'm currently using dial thermometer and hygrometer, but I've ordered an AcuRite digital combination one which will arrive tomorrow. Right now, temps are in the high 80s on the hot side, but the cool side only feels a bit warmer than room temperature...maybe I should unplug the UTH on the hot side for now to see if it works better? My corn snake likes the hot side better as well in the other enclosure, so I find it odd that the ball seems to prefer the cooler side...