Filter
Top Products
- 31 -
LIMITATIONS OF THIS ALARM SYSTEM
While this system is an advanced design security system, it does not offer guaranteed
protection against burglary, fire, or other emergency. Any alarm system, whether
commercial or residential, is subject to compromise or failure to warn for a variety of
reasons. For example:
Intruders may gain access through unprotected openings or have the technical
sophistication to bypass an alarm sensor or disconnect an alarm warning device.
Intrusion detectors (e.g. passive infrared detectors), smoke detectors, and many
other sensing devices will not work without 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.
Signals sent by wireless transmitters may be blocked or reflected by metal before
they reach the alarm receiver. Even if the signal path has been recently checked
during a weekly test, blockage can occur if a metal object is moved into the path.
A user may not be able to reach a panic or emergency button quickly enough.
While smoke detectors have played a key role in reducing residential fire deaths in
the United States, they may not activate or provide 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 in
conjunction with the System may not work are as follows: Smoke detectors may not
sense fires that start where smoke cannot reach 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 building. A second floor detector, for
example, may not sense a first floor or basement fire. Moreover, smoke detectors
have sensing limitations. No smoke detector can sense every kind of fire every time.
In general, detectors may not always warn about fires caused by carelessness and
safety hazards like smoking in bed, violent explosions, escaping gas, improper
storage of flammable materials, overloaded electrical circuits, children playing with
matches, or arson. Depending on the nature of the fire and/or the location of the
smoke detectors, the detector, even if it operates as anticipated, may not provide
sufficient warning to allow all occupants to escape in time to prevent injury or death.
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 Intrusion can only be detected in unobstructed areas covered by the beams. They
cannot detect motion or intrusion that takes place behind walls, ceilings, floors,
closed doors, glass partitions, glass doors or windows. Mechanical tampering,
masking, painting or spraying, of any material on the mirrors, windows or any part of
the optical system can reduce their detection ability. Passive Infrared Detectors
sense changes in temperature; however, as the ambient temperature of the protected
area approaches the temperature range of 90 degrees to 150 degrees Fahrenheit, the
detection performance can decrease.