I am going to have to check this out further! Mine is kind of small, but would easily hold 3-4 boxes, and a humidity source. I was under the impression that the inside temp was relative to the outside temp. So that if it was say, 75 degrees outside then it would be x degrees inside, and would vary as did the outside temp. :dunno: I do not think I still have the manual for mine, though. So how hard is it to modify a cooler of this type inorder to use to store cigars?