Security System Limitations - Bosch D220 User Manual

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 does not detect their entrance.
• If intruders have the technical means of bypassing, jamming, or
disconnecting all or part of the system, they are not detected.
• If the AC power supply is off and the backup battery is either
missing or dead, sensors do 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 common 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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