First Alert FA162C User Manual
Page 48
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WARNING! THE LIMITATIONS OF THIS ALARM SYSTEM (continued)
•
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 those 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 protected area approaches the temperature range of 90
°
to 105
°
F, the
detection performance can decrease.
•
Alarm warning devices such as sirens, bells or horns may not alert people or wake up sleepers if they 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 is muffled from a stereo, radio, air conditioner or other appliance, or by passing
traffic. Finally, alarm warning devices, however loud, may not warn hearing-impaired people or waken deep sleepers.
•
Telephone lines needed to transmit alarm signals from a premises to a central monitoring station may be out of
service or temporarily out of service. Telephone lines are also subject to compromise by sophisticated intruders.
•
Even if the system responds to the emergency as intended, however, occupants may have insufficient time to protect
themselves from the emergency situation. In the case of a monitored alarm system, authorities may not respond
appropriately.
•
This equipment, like other electrical devices, is subject to component failure. Even though this equipment is designed
to last as long as 10 years, the electronic components could fail at any time.
The most common cause of an alarm system not functioning when an intrusion or fire occurs is inadequate
maintenance. This alarm system should be tested weekly to make sure all sensors and transmitters are working
properly.
Installing an alarm system may make one eligible for lower insurance rates, but an alarm system is not a substitute for
insurance. Homeowners, property owners and renters should continue to act prudently in protecting themselves and
continue to insure their lives and property.
We continue to develop new and improved protection devices. Users of alarm systems owe it to themselves and their
loved ones to learn about these developments.