Need to replace a battery powered detector. Do most of them have the same sort of back plate or will I generally have to attach a new back plate? Do they usually come with a back plate?

  • 3
    Back plates are usually different between brands, but they all come with back plates anyway. Might save a couple minutes if getting same brand.
    – crip659
    Commented May 22, 2021 at 20:51
  • 3
    No, they're not standardized. Commented May 22, 2021 at 22:55

1 Answer 1


Yes, they come with a back plate, if you get the same brand (if still available) they might fit. But you'll get all the stuff you need to install them as it were a first time install.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.