Google Nest Protect - Test Before You Install; Turn Off the Mains Power

Fuse box
WARNING
ELECTRICAL SHOCK HAZARD
Failure to turn o the power may result in
serious electric shock, injury and death.
8
5. Turn o the mains power
Protect yourself, and avoid blowing a fuse. Switch o
the correct circuit breaker for the room where you
are installing Nest Protect, or remove the fuse from
the fuse box.
Tip: To double-check Nest Protect’s room name, press
the buon once. You’ll hear the location that you
assigned to it during setup. It’ll say something like,
“Ready in the bedroom.”
4. Test before you install
Once you’ve nished seing up all your Nest Protects,
make sure that they’ve been added to your account.
Push the buon on one Nest Protect and follow the
instructions. All your Nest Protects should speak
up. Now you can install them on the ceiling or wall.