Just remember with a dimmer, when your room temperature fluctuates, you may have to adjust the dimmer, also if you have any kind of draft or run a fan, especially in summer it will change it. A temp gun is very helpful especially with a dimmer. I have one dimmer that I use to use and especially in winter I had to adjust it constantly, so I kept track of the cages temps for a few days to a week, then I made two marks on the dimmer, one for night and the other for day. My house temps are crazy in winter.