The Llmltatlons Ofthis Alarm System - First Alert FA110C User Manual

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WARNING!
THE LIMITATIONS OF THIS ALARM SYSTEM
2~2 system is an advanced design securfty syst?m, it do$.s not ofrer guaranteed protection a
P
.'nst burglary or fire ?r
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Any alarm system, whether commerual or resrdentral, ts subject to compronuse or allure to warn for a van-
ety of reasons. or example:
. Intruders may gain access through unprotected openings or have the technical sophistication to bypass an alarm sensor or
disconnect an alarm warning dewce.
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Intrusion detectors (e.g. passive infrared detectors), smoke detectors, and many other sensing devices will not work with
out power. Battery operated devices will not work without batteries, with dead batteries, or if the batteries are not put In
properly. Devices powered solely by AC will not work if their AC power supply is cut off for any reason, however briefly.
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A user may not be able to reach a panic or emergency button quickly enough.
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While smoke detectors have played a key role in reducing residential fire deaths in the United States, they may not activate
or provkfe early warning for a variety of reasons in as many as 35% of all fires, according to data published by the Federal
Emergency Management Agency. Some of the reasons smoke detectors used n conjunction with this System may not work
are as fotlows. Smoke detectors ma
that start where smoke cannot reac x
have been improperly installed and positioned. Smoke detectors may not sense
fires
the detectors, such as in chimneys, in walls, or roofs, or on the other side of closed
doors. Smoke detectors also may not sense a fire on another level of a residence or buildng. A second floor detector, for
example, may not sense a first floor or basement fire. Moreover, smoke detectors have sensing limitations. No smoke de-
tector can sense every kind of fire every time. In general, detectors may not always warn about fires caused by careless-
ness and safety hazards like smoking in bed, violent explosions, escaping gas, improper storage of flammable mater&
overloaded ehxhtcal circuits, children playing with matches, or arson. Depending upon the nature of the fire and(or the lo-
cations of the smoke detectors, the detector, even if it operates as anticipated, may not provide sufficient warning to allow
afl occupants to escape in time to prevent injury or death.
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Passive Infrared Motion Detectors can only detect intrusion within the designed ranges as diagrammed in their installation
manual. Passive Infrared Detectors do not provide volumetric area protection. They do create multiple beams of protection,
and intmsion can only be detected in unobstructed areas covered by those beams. They cannot detect motron.or intrusron
that takes place behind walls, ceilings, floors, dosed doors, glass partitions, glass doors, or windows. Mechantcal tamper-
ing, masking, painting or spraying of any material on the mirrors, windows or any part of the optical system can reduce thetr
d&action abilii. Passive Infrared Detectors sense changes in temperature; however, as the ambient temperature of pro-
tected area approaches the temperature range of 90" to 10S°F (320 to 4O'C), the detection performance can decrease.
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