DSC ESCORT558O Manuel d'instructions télécharger pdf (Page 21)

WARNING Please Read Carefully

System Failures

This system has been carefully designed to be as effective as possible. There

are circumstances, however, involving fire, burglary, or other types of emer-

gencies where it may not provide protection. Any alarm system of any type

may be compromised deliberately or may fail to operate as expected for a

variety of reasons. Some but not all of these reasons may be:

■ ■

■ Inadequate Installation

A security system must be installed properly in order to provide adequate

protection. Every installation should be evaluated by a security professional

to ensure that all access points and areas are covered. Locks and latches on

windows and doors must be secure and operate as intended. Windows, doors,

walls, ceilings and other building materials must be of sufficient strength and

construction to provide the level of protection expected. A reevaluation must

be done during and after any construction activity. An evaluation by the fire

and/or police department is highly recommended if this service is available.

■ ■

■ Criminal Knowledge

This system contains security features which were known to be effective at

the time of manufacture. It is possible for persons with criminal intent to

develop techniques which reduce the effectiveness of these features. It is im-

portant that a security system be reviewed periodically to ensure that its fea-

tures remain effective and that it be updated or replaced if it is found that it

does not provide the protection expected.

■ ■

■ Access by Intruders

Intruders may enter through an unprotected access point, circumvent a

sensing device, evade detection by moving through an area of insuffi-

cient coverage, disconnect a warning device, or interfere with or prevent

the proper operation of the system.

■ ■

■ Power Failure

Control units, intrusion detectors, smoke detectors and many other security

devices require an adequate power supply for proper operation. If a device

operates from batteries, it is possible for the batteries to fail. Even if the bat-

teries have not failed, they must be charged, in good condition and installed

correctly. If a device operates only by AC power, any interruption, however

brief, will render that device inoperative while it does not have power. Power

interruptions of any length are often accompanied by voltage fluctuations which

may damage electronic equipment such as a security system. After a power

interruption has occurred, immediately conduct a complete system test to en-

sure that the system operates as intended.

■ ■

■ Failure of Replaceable Batteries

This system’s wireless transmitters have been designed to provide several years

of battery life under normal conditions. The expected battery life is a function

of the device environment, usage and type. Ambient conditions such as high

humidity, high or low temperatures, or large temperature fluctuations may

reduce the expected battery life. While each transmitting device has a low

battery monitor which identifies when the batteries need to be replaced, this

monitor may fail to operate as expected. Regular testing and maintenance will

keep the system in good operating condition.

■ ■

■ Compromise of Radio Frequency (Wireless) Devices

Signals may not reach the receiver under all circumstances which could

include metal objects placed on or near the radio path or deliberate jam-

ming or other inadvertent radio signal interference.

■ ■

■ System Users

A user may not be able to operate a panic or emergency switch possibly due to

permanent or temporary physical disability, inability to reach the device in

time, or unfamiliarity with the correct operation. It is important that all sys-

tem users be trained in the correct operation of the alarm system and that they

know how to respond when the system indicates an alarm.

■ ■

■ Smoke Detectors

Smoke detectors that are a part of this system may not properly alert occupants of

a fire for a number of reasons, some of which follow. The smoke detectors may

have been improperly installed or positioned. Smoke may not be able to reach the

smoke detectors, such as when the fire is in a chimney, walls or roofs, or on the

other side of closed doors. Smoke detectors may not detect smoke from fires on

another level of the residence or building.

Every fire is different in the amount of smoke produced and the rate of

burning. Smoke detectors cannot sense all types of fires equally well.

Smoke detectors may not provide timely warning of fires caused by care-

lessness or safety hazards such as smoking in bed, violent explosions,

escaping gas, improper storage of flammable materials, overloaded elec-

trical circuits, children playing with matches or arson.

Even if the smoke detector operates as intended, there may be circumstances

when there is insufficient warning to allow all occupants to escape in time to

avoid injury or death.

■ ■

■ Motion Detectors

Motion detectors can only detect motion within the designated areas as

shown in their respective installation instructions. They cannot discrimi-

nate between intruders and intended occupants. Motion detectors do

not provide volumetric area protection. They have multiple beams of

detection and motion can only be detected in unobstructed areas cov-

ered by these beams. They cannot detect motion which occurs behind

walls, ceilings, floor, closed doors, glass partitions, glass doors or win-

dows. Any type of tampering whether intentional or unintentional such

as masking, painting, or spraying of any material on the lenses, mir-

rors, windows or any other part of the detection system will impair its

proper operation.

Passive infrared motion detectors operate by sensing changes in tempera-

ture. However their effectiveness can be reduced when the ambient tem-

perature rises near or above body temperature or if there are intentional

or unintentional sources of heat in or near the detection area. Some of

these heat sources could be heaters, radiators, stoves, barbeques, fire-

places, sunlight, steam vents, lighting and so on.

■ ■

■ Warning Devices

Warning devices such as sirens, bells, horns, or strobes may not warn

people or waken someone sleeping if there is an intervening wall or

door. If warning devices are located on a different level of the residence

or premise, then it is less likely that the occupants will be alerted or

awakened. Audible warning devices may be interfered with by other

noise sources such as stereos, radios, televisions, air conditioners or

other appliances, or passing traffic. Audible warning devices, however

loud, may not be heard by a hearing-impaired person.

■ ■

■ Telephone Lines

If telephone lines are used to transmit alarms, they may be out of service or

busy for certain periods of time. Also an intruder may cut the telephone line or

defeat its operation by more sophisticated means which may be difficult to

detect.

■ ■

■ Insufficient Time

There may be circumstances when the system will operate as intended, yet

the occupants will not be protected from the emergency due to their inabil-

ity to respond to the warnings in a timely manner. If the system is moni-

tored, the response may not occur in time to protect the occupants or their

belongings.

■ ■

■ Component Failure

Although every effort has been made to make this system as reliable as pos-

sible, the system may fail to function as intended due to the failure of a compo-

nent.

■ ■

■ Inadequate Testing

Most problems that would prevent an alarm system from operating as

intended can be found by regular testing and maintenance. The complete

system should be tested weekly and immediately after a break-in, an at-

tempted break-in, a fire, a storm, an earthquake, an accident, or any kind

of construction activity inside or outside the premises. The testing should

include all sensing devices, keypads, consoles, alarm indicating devices

and any other operational devices that are part of the system.

■ ■

■ Security and Insurance

Regardless of its capabilities, an alarm system is not a substitute for

property or life insurance. An alarm system also is not a substitute for

property owners, renters, or other occupants to act prudently to prevent

or minimize the harmful effects of an emergency situation.

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DSC ESCORT558O Manuel d'instructions Page 21

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