A:AnswerYou can use them exactly how you want to. That is how i have mine set up. 2 different circuits with non smart switches. My non smarts are also dimmable and that worked also.
A:AnswerI'm confused by BelkinStaff's answer. Is the switch only for indoor use, contrary to the information in the Specifications section of the product listing page? Or was the answer incomplete? It does not mention outdoor use and also does not recommend against or prohibit outdoor use.
A:AnswerDon't see why it wouldn't, but I don't actually have mine wired this way. I have a dimmer on a single pole, and the 3 ways on 3 other circuits.
A:AnswerThis should fit fine in a multi switch gang box. I put this in a single box and used my original switch cover on it and it worked fine, so I assume it would work on a multi switch cover too.