OMNI-624/OMNI-624EU Installation and Setup Guide
10-4
LIMITATIONS OF THIS 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 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.
•
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, they may not
activate or provide early warning for a variety of reasons in as many as 35% of all fires. Some of
the reasons smoke detectors used in conjunction with this system may not work are as follows:
Smoke detectors may have been improperly installed and positioned. 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 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 detect intrusion only 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
°
to 104
°
F (32
°
to 40
°
C), the detection performance can decrease.
•
Alarm warning devices such as sirens, bells or horns may not alert people or wake up sleepers
who are located on the other side of closed or partly open doors. If warning devices sound on a
different level of the residence from the bedrooms, then they are less likely to waken or alert
people inside the bedrooms. Even persons who are awake may not hear the warning if the alarm
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