I'm thinking I will print this discussion over to the maker community here and hopefully someone can explain to me what is going on. I have been looking for something to keep the water temperature steady for my developing. Unfortunately, I'm not an engineer type person so while I understand some of what's happening here, I don't understand all of it.

Does your unit work on 110-120 or would I have to have a 220 socket installed where I planned to use this?