29
Security System Limitations
Not even the most advanced security system can guarantee
protection against burglary, fire, or environmental threats. All
security systems are subject to possible compromise or failure-to-
warn for a variety of reasons including, but not limited to, the
following:
If sirens or horns are placed outside the hearing range of
people in remote areas of the building or in areas which are
frequently closed off, they do not provide the intended
protection.
If intruders gain access through unprotected points of
entry, the system will not detect their entrance.
If intruders have the technical means of bypassing, jam-
ming, or disconnecting all or part of the system, they will
not be detected.
If the AC power supply is OFF and the backup battery is
either missing or dead, sensors will not detect intrusion.
Smoke detectors cannot detect smoke in chimneys, walls, or
roofs, or smoke blocked by a closed door. They may not
detect smoke or fire on a level of the building different
from the one on which they are located. Smoke detectors
may not be able to warn in time about fires started by
explosions, improper storage of flammables, overloaded
electrical circuits, or other types of hazardous conditions.
If phone lines are out of service, reports from the security
system to the security company cannot be sent. Telephone
lines are vulnerable to compromise by several means.
Inadequate maintenance and failure to test are the most com-
mon causes of alarm failure. It is strongly recommended that you
test your system once a week to be sure that all system components
are working properly.
Although having a security system may make you eligible for
reduced insurance premiums, the system is no substitute for
insurance. Warning devices cannot compensate you for loss of life
or property.
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