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ALARM LIMITATIONS
LIMITATIONS OF SMOKE ALARMS
Alarms reduce deaths resulting from house fires
worldwide However smoke alarms can only
work if they are properly located, installed and
maintained, and if smoke reaches the alarms
• Smoke alarms may not wake all individuals
Make sure that you create an escape plan and
that you practise fire drills with all members
of the family
• Smoke alarms cannot work without power
If they are powered by batteries, the smoke
alarms cannot work if the batteries are
missing, dead or disconnected If they are
wired, the smoke alarms cannot work during
a long power cut and once the backup battery
is dead Nest Protect will warn you in advance
when batteries are running low so that you can
replace them
• Smoke will not be able to reach the smoke
sensor while the dust cover is in place The
dust cover must be removed
• Smoke alarms cannot detect fires if the smoke
does not reach the alarms For example, if a
door is closed, smoke may not reach the smoke
alarm This is why you should have a smoke
alarm in each bedroom and in the hallways, as
bedroom doors may be closed at night
• Smoke alarms may not be heard Although the
smoke alarm comes with a loud, 85-decibel
siren, it may not be heard if: 1) people have
consumed alcohol or drugs, 2) the alarm is
drowned out by noise from stereos, TVs,
traffic, air conditioners or other appliances,
3) residents are hearing impaired or have
high-frequency hearing loss associated with
ageing Special smoke alarms should be
SAFETY
Summary of Contents for A0124
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