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' THE
LIMITATIONS
OF
THIS
RAD1O
COMMUNICATIONS
SYSTEM
While this 900 MHz Long Range Radio communications system is part of
at
advanced and sophisticated security system, it does not offer guarantew
protection against burglary or fire, nor does it guarantee mmmunication o
burglary or fire warning signals to a central station.
Any alarm
system, or an!
communications system, whether commercial
or residential, is subject tc
compromise, or failure to warn,
for a variety of reasons. Examples of
some o
these reasons are:
Intruders may gain access through unprotected openings or have technics
sophistication to bypass an alarm
sensor, and then disconnect
an slam
communicating radio transmitter.
G Signals sent by 900 MHz radio transmitters may be blocked by metal
mountains, hills, foliage and other natural and man made obstructions
befor(
they are received
by a master receiving station or sent to a central station
Even
a path previously verified
as
acceptable may periodically change it!
characteristics.
Long-range radio communication transmitters will not work without power
Radio transmitters require a battery to work properly in the absence of A.C
power. A weak or dead battery, or improperly installed batteries may preven
these devices from functioning properly if A.C. power is disrupted for an]
reason.
" Radio communication systems are subject to external interference, natural 01
man-made, intentional or coincidental, that may keep a signal or group oi
signals from being successfully received by a master receiving station or
a
central station. In addition, one-way radio communication devices receive nc
acknowledgment from a master receiving station that their signals are being
successfully received. Signals transmitted may clash with those transmitted
from other systems. While statistical estimates predict successful operation,
if the guidelines in
the
system manuals are followed, the operation of this
system is still probabilistic in nature and may be subject to random signal
failures.
Radio communication
devices may change their characteristics over time,
Such parameters as frequency, modulation and power should be properly
monitored periodically, with required adjustments made by qualified personnel.
" Radio communication devices must be installed by qualified personnel,
Improper installation or selection of a transmitter's location may cause
intermittent or unreliable performance.
Any electronic or mechanical device can fail. The most common cause of an
aIarm system or a radio communications system not functioning properly when
a n intrusion or fire occurs is inadequate maintenance, maintenance that is
intended to find such failures as soon as possible. This alarm and communication
system should be tested weekly to be sure all sensors and transmitters are
working properly.
Installing an alarm system may make one eligible for lower insurance rates, but
a n alarm system is not a substitute for adequate insurance. Homeowners,
property owners, business owners and renters should continue to insure their
p
roperty and lives.
-15-
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