Operation has been confirmed. I think it's in good condition, but it was used for one season, so there are some rust and paint chips. The minimal thermo has been chewed on. It's the cover part, so there's no problem with use, but please refrain from purchasing if you are concerned. No instruction manual. It currently heats up without any problems, but I don't know how long the ceramic bulb will last, so I recommend preparing a spare. I used it for sugar gliders. I'm selling it because I have more small animals and have decided to turn on the room heating!