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Soft, descendent 6 tone beep; Yellow blinking light
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Pre-warning alert for low battery.
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End of Life, Pre-Warning; Install two new AA batteries*.
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1 chirp per minute; 1 yellow flash in sync with the horn pattern; followed by 1 yellow flash every 6 seconds. (Low Battery Latch is engaged.)
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Low battery warning.
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Install two new AA batteries*.
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Horn sounds 3 “chirps” per minute; 3 yellow flashes in sync with the horn pattern; followed by 3 yellow flashes every 6 seconds
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MALFUNCTION SIGNAL. Device is not working properly, and needs to be replaced.
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If unit is under warranty, contact Consumer Support to process a warranty replacement.
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CARBON MONOXIDE ALARM ONLY
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CO Alarm goes back into Alarm 5
minutes after you silence it.
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CO levels indicate a potentially
dangerous situation.
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IF YOU ARE FEELING SYMPTOMS
OF CO POISONING, EVACUATE
your home and call 911 or the Fire
Department. Refer to “If The CO
Alarm Sounds” for details.
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CO Alarm sounds frequently even
though no high levels of CO are
revealed in an investigation.
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The CO Alarm may be improperly
located. Refer to “Where to Install
This Alarm” for details.
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Relocate your Alarm. If frequent
Alarms continue, have home
rechecked for potential CO problems.
You may be experiencing an
intermittent CO problem.
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Smoke Alarm sounds when
no smoke is visible.
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Unwanted Alarm may be
caused by non-emergency
source like cooking smoke.
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Silence Alarm using Test/Silence
button; clean the Alarm’s cover
with a soft, clean cloth. If frequent
unwanted Alarms continue,
relocate your Alarm. Alarm may
be too close to a kitchen, cooking
appliance, or steamy bathroom.
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* For a list of acceptable replacement batteries, see "Regular Maintenance."
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