Troubleshoot when nothing happens after removing Nest Protect's battery tab
If you don’t see a blue light or hear the welcome message after removing the battery tab, the batteries may need to be re-seated. To fix the problem, you will need to remove the batteries and clean out any pieces of the battery tab that are left in the battery tray.
|Note: You will need to push the spring-
loaded battery stays out of the way to get the
third battery into each tray.
|Once the batteries are reinstalled, reattach
the battery door by sliding it into the tabs
located on the opposite side from the
batteries and replacing the screws.