Owner's Manual

20
ALARM
LIMITATIONS
LIMITATIONS OF
SMOKE
ALARMS
Alarms reduce deaths resulting from home 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
waken all individuals.
Make sure you create an escape plan and
you practice 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 outage 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 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 horn
of
85 decibels,
it
may
not
be heard
if:
1)
people
have consumed alcohol or drugs,
2)
the
alarm is drowned by noise from stereo,
TV,
traffic,
air conditioner or
other
appliances,
3)
residents are hearing impaired or have high
frequency hearing loss associated
with
aging.
Special smoke alarms should be installed
for
those who are hearing impaired.