ADEMCO Vista-20HW Troubleshooting Guide download pdf (Page 98)

100

WARNING

THE LIMITATIONS OF THIS AUUtM

SYSTEM

While this System is an advanced design security system, it does not offer guaranteed protection against

burglary, tire 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 infkared 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 eady 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 tires 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

sensea firstflooror basementfire. Finally,smokedetectorshavesensinglimitations.No smokedetectorcan

sense every kind of fire every time. In general, detectors may not always warn about fires caused by

carelessnessand safety hazards like smoking in bed, violentexplosions,escapinggas, improperstorageof

flammablematerials,overloadedelectrical circuits,childrenplayingwith matches,or arson.Dependingon

the nature of the fire and/orlocation of the smokedetectors,the detector,even if it operatesas anticipated,

maynot providesufficientwarningto allow alloccupantsto escapein time to preventinjuryor death.

Passive Infrared Motion Detectorscan only detectintrusionwithinthe designedrangesas diagramed in

their installation manual. Passive Infrared Detectorsdo not provide volumetric area protection.They do

create multiple beams of protection, and intrusion can only be detectedin unobstructedareas coveredby

those beams. They cannot detect motion or intrusionthattakesplace behind walls, ceilings,floors,closed

doors,glass partitions,glassdoors,or windows. Mechanicaltampering,masking,paintingor sprayingof any

materialon the mirrors,windowsor any part of the opticalsystemcanreducetheir detectionability.Passive

InfraredDetectorssensechangesin temperature;however,as the ambienttemperatureof the protectedarea

approachesthetemperaturerange of 90° to 105”F(32°to 40”C),thedetectionperformancecan decrease.

Alarm warning devices such as sirens, bells or horns may not alert people or wake up sleepersif they are

locatedon the other side of closed or partly open doors.If warningdevicesare locatedon a differentlevelof

the residencefrom the bedrooms,thenthey are lesslikelyto wakenor alertpeopleinsidethe bedrooms.Even

personswho are awake may not hear the warning if the alarmis muffledby noisefrom a stereo,radio,air

conditioneror other appliance,or by passingtraffic.Finally,alarmwarningdevices,howeverloud,may not

warnhearing-impairedpeople.

Telephonelinesneededto transmitalarmsignalsfrom a premisesto a centralmonitoringstationmaybe out

of service or temporarily out of service. Telephone lines are also subject to compromiseby sophisticated

intruders.

Evenif the systemrespondsto the emergencyasintended,however,occupantsmayhaveinsticient timeto

protectthemselvesfrom the emergency situation.In the caseof a monitoredalarmsystem,authoritiesmay

notrespondappropriately.

Thisequipment,like otherelectricaldevices,is subjectto componentfailure. Eventhoughthisequipmentis

designed to last as long as 20 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. The security keypad (and remote keypad) should be tested as well.

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

conditions. Longevity of batteries maybe as much 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, as well as 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, thus allowing time to arrange a change of battery to

maintain protection for that given point within the system.

Installing an alarm system may make the owner eligible for a lower insurance rate, 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-20HW Troubleshooting Guide Page 98

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