ADEMCO VISTA 10 User's Guide download pdf (Page 39)

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Limitations

WARNING! THE LIMITATIONS OF THIS ALARM SYSTEM

While this system is an advanced design security system, it does not offer guaranteed protection against burglary or 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 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. 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 upon the nature of the fire and/or the locations 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 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 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 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 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.

Wireless transmitters (used with some systems) are designed to provide long battery life under normal operating conditions.

Longevity of batteries may be as long as 4 to 7 years, depending on the environment, usage, and the specific wireless device being

used. External factors such as humidity, high or low temperatures, and large swings in temperature may all reduce the actual battery

life in a given installation. This wireless system, however, can identify a true low-battery situation, allowing time to arrange a change

of battery to maintain protection for that point within the system.

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.

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ADEMCO VISTA 10 User's Guide Page 39

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