I decided to create an aluminum cover plate to hide the old box, and create a flat surface for installing the Nest Hello. The Nest Hello Video Doorbell adapter plate is smaller than the Nutone Speaker installation Box, so an adapter plate is required. I cut a rectangle 4 3/8" wide by 5 7/8" tall to cover the old Nutone connection box in the wall.
3 Can you put a doorbell transformer in the wall? 4 Does a doorbell transformer need to be in a junction box? 5 Do all wired doorbells need a transformer? 6 Can you wire a doorbell transformer to an outlet? 7 Where do doorbell wires go? 8 Is the doorbell transformer in the chime? 9 Can I use a 24V transformer on a 16V doorbell?