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AC powered alarms (without battery backup) will not operate if the
AC power has been cut off, such as by an electrical fire or an open
fuse.
Smoke alarms must be tested regularly to make sure the batteries
and the alarm circuits are in good operating condition.
Smoke alarms cannot provide an alarm if smoke does not reach
the alarm. Therefore, smoke alarms may not sense fires starting in
chimneys, in walls, on roofs, on the other side of a closed door or
on a different floor.
If the alarm is located outside the bedroom or on a different floor, it
may not wake up a sound sleeper.
The use of alcohol or drugs may also impair one’s ability to hear the
smoke alarm. For maximum protection, a smoke alarm should be
installed in each sleeping area on every level of a home.
Although smoke alarms can help save lives by providing an early
warning of a fire, they are not a substitute for an insurance policy.
Home owners and renters should have adequate insurance to
protect their lives and property.
Carbon Monoxide Alarm
The carbon monoxide (CO) alarm monitors the air for the presence
of CO. It will alarm when there are high levels of CO present, and
when there are low levels of CO present over a longer period of
time. When a CO condition matches either of these situations,
the alarm/voice message warning system will sound and be
accompanied by the flashing red LED. The carbon monoxide sensor
uses an electrochemical technology.