Google Nest Protect How To Install page 6

9. Connect
power
Plug the 230V connector into the back of your Nest Protect.
Tip: If the electrical wiring box is recessed and isn't flush with the wall or
ceiling, use the dry wall screws that are included in the Nest Protect (Wired
230V) box and attach the backplate directly to the ceiling
10. Install your
Tuck any excess wiring into the electrical box first. Hold Nest
Nest
Protect against the backplate and turn it clockwise. You'll feel
Protect
the tabs drop into place and grip the backplate. Continue
turning until it's square with the wall or ceiling. Install the rest
of your Nest Protects if you have more.
Tip: To remove it (for cleaning or battery replacement), turn off
power to your Nest Protect at the fuse box or remove the fuse
first. Then turn it anticlockwise until it disconnects from the
backplate.
11. Switch
mains power
back on or
replace
the fuse