Security Link SL150 Guía para resolver problemas descargar pdf (Pagina 135)

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APPENDIX C

Warnings and Limitations

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WARNING!

THE 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:

•

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 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 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 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. Finally, 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 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 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 the

protected area approaches the temperature range of 90° to 105°F (32° to 40°C), the detection

performance can decrease.

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