User's Guide

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2. Twist Nest Protect anticlockwise until it
disconnects from the back plate.
3. Detach the power connector
from the back of Nest Protect
and open the battery door.
4. Replace the batteries. Align
the + positive and - negative
ends with the markings in
the battery compartment.
5. Close the battery
compartment. Do not force the door closed.
6. Re-attach the power connector.
7. Push Nest Protect onto the back plate and
turn it clockwise until you feel it grip.
8. Turn mains power to Nest Protect back on or
replace the fuse.
9. Press the Nest button twice.
GENERAL MAINTENANCE
CLEANING YOUR NEST PROTECT
Nest Protect has been designed to be as
maintenance free as possible, but you should
keep it clean. As with any smoke alarm, dust
build-up on the outside or inside of Nest
Protect can stop it from working properly.
To clean Nest Protect:
1. Turn off mains power to Nest Protect or
remove the fuse (see p.9).
2. Remove it from the wall or the ceiling (turn
anticlockwise until it comes off the back
plate and detach the power connector).
3. Wipe the outside with a clean, slightly damp
cloth. Don’t use soap or solvents.
4. Place Nest Protect on a soft, dry cloth with
the Nest button facing down. Open the
battery compartment door and remove the
batteries. Remove the screws and lift off
the back. Be careful not to lose the screws.
5. Gently vacuum the inside. Make sure that
you clean all the way around the mesh sides
of the smoke chamber (the large
metal circle).
Note: Never use detergents or solvents (like
glass cleaner) on your Nest Protect, and do
not spray air fresheners, hair spray or other
aerosols near it. Do not get water inside the
alarm or paint over it.
REPLACING THE BACKUP BATTERIES
If there is a power cut, Nest Protect will
use three AA Energizer
®
Ultimate Lithium
batteries (L91) for backup. These batteries
can be purchased at your local retailer.
1. Turn off mains power to Nest Protect or
remove the fuse (see p.9).
WARNING
• Only use batteries specified by Nest. Use
of a different battery model will have a
detrimental effect on the operation of the
smoke alarm. The alarm may not operate
properly with other batteries. Never use
rechargeable batteries, as they may not
provide a constant charge.
• Never remove the batteries from a
battery-operated alarm to stop an
unwanted alarm (caused by cooking
smoke, etc.). Removing batteries disables
the alarm so that it cannot sense smoke
or carbon monoxide, leaving you at risk.