FBII XL4612RM Owner's Manual page 19

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Infrared Detectors do not provide volumetric area protection. They do
create multiple beams of protection, and intrusion can only be
detected in unobstructed areas revered by the beams. They cannot
detect motion or intrusion that takes place behind walls, ceifings,
floors, closed doors, glass patitions, glass doors, or window.
Mechanical tampering, roasting, painting, or spraying of any matedal
on the mirrors, windows or any part of the optical system can reduce
their detection atri~iy. Paeeive Infrared Detectors sense changes in
temperature; however, as the amhenf temperature of the protected
area approaches the temperature range of 90 to 150F, 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 dtieranf
level of the residence from the bedrooms, then fhey are fess likely to
waken or alert people inside the bedrooms. Even persona who are
awake may nof hear the warning if the alarm is muffled by noise from
a stereo, radio, air conditioner or other app~ances, or by passing
traffic. Hnally, alarm warning devices, however loud, my not warn
hearing-impaired people or waken deep sleepers.
Telephone hnes needed to transmit alarm signals from a premises to
a central monitoring atafion maybe out of semice or tem~rarily out
of sewice. Telephone tines are also subject to compromise by
sophisticated intruders.
Even if the syetem responds to the emergency as intended, however,
occupanfs may have inauffiiienf time to protect themselves from the
emergency situation. In the case of a monfiored alarm sy~em,
authorities may not respond appropriately.
This equipment, tike other electrical devices, is eubjecf to compcnenf
failure. Even though this equipment is designed to last as long as 10
years, the electronic components could fail at anytime.
The most common cause of an alarm system not functioning when an intrusion
or fire omrs is inadequate maintenance. This alarm system should be tested
weekly to make sure all sensors are wortdng properfy.
Insfalffng an alarm system may make one e~gible for lower insurance ratea, but
an alarm eystem is not a substitute for insurance. Homeowners, property
owners and renters should continue to act prudently in protecting themselves
and m~nue to insurs
their Kves and property.
We continue to develop new and improved protection devices. Users of alarm
sysfeme owe if to themselves and their loved ones to learn abut these
developments.
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