SYSTEM LIMITATIONS
LIMITATIONS OF THIS ALARM SYSTEM
While this system, is an advanced design secuflty system, it does not offer guaranteed
protetion againti burglay, fire, or other emergency. Any alarm system, whether mmmercial
or residential, is su~ect to compromise or failure to wam fora vatiefy of reasons. For example
BIntruders may gain access through unprotected openings or have the technical
=ptistiation to bypass an alarm sensor or disconnect an alarm warning device.
~Intrusion detetiors (e.g. passive infrared detectors), smoke detectors, and many other
sensing devices will not work without batfeties, or if the batteries are not put in properly.
Devices powered solely by AC will not work if their AC power supply is cut offfor my reason,
however btiefly.
@Signals sent by wireless transmitters maybe blocked or reflected by metal before they reach
the slam receiver. Even if the signal path h= been recently checked dufing aweekly test,
blockage can occur if ametal objed is moved into the path.
QAuser may not be able to reach apanic or emergency button quickly enough.
OWhile smoke detetiors have played a key role in reducing residential fire deaths in the
United States, they may not activate or provide early warning for avatiety of reasons in as
many as 350/. of all fires according to data pubbshed by the Federal Emergency Management
Agency. Some of the reasons smoke detectors used in conjunction with the System may not
work are as follows Smoke detectors may notsense fires that stati where smoke cannot reach
the detectors, such as in chimneys, in walls, or roofs, or on the other side of closed doors.
Smoke detetiors also may not sense afire on another level of aresidence or building. A
sewnd floor detector, for example, may not sense afirst floor or basement fire. Moreover,
smoke detectors have sensing hmititions. No smoke detector can sense evew Mnd of fire
evey time. In general, detectors may not always warn about fires caused by carelessness
and safety hzards like smoMng in bed, violent explosions, escaping gas, improper storage
of flammable matetials, overloaded electrical circuits: children playing with matches, or arson.
Depending on the nature of the fire andlor the locat[on of the smoke detetiors, the detector,
even if it operatess anticipated, may not provide sufficient warning to allow all occupants to
escape in time to prevent inju~ or death.
BPassive Infrared Motion Detectors can only detect Intrusion wit~n the designed ranges as
diagramed in their Installation Manual. Passive Infrared Detectors do not provide volumetflc
area protection. They do create multiple beams of protection, and Intrusion can only be
detected in unobstructed areas covered by the beams. They mnnot detect motion or intrusion
that tikes place behind walls, ceifings, floors, closed doors, glass patitions, glass doors or
windows. Mechanical tampeting, maskng, painting or spraying, of any matetial on the mirrors,
windows or any pati of the optical system can reduce their detection abitity. Passive Infrared
Detectors sense changes in temperature however, as the ambient temperature of the
profected area approaches the temperature range of 90 degrees to 150 degrees Fahrenheit,
the detection pedormance can decrease.
OAlarm warning devices such as sirens, bells or horns may not aleti people or wake up
sleepers who are located on the other side of closed or panly open doors. If warning devices
sound on atifferent level of the residence from the bedrooms, then they are less fikely to
waken or aleti people inside the bedrooms. Even persons who are awake may nOt hear the
warning ifthe alarm is muffled by noise from astereo, ratio, air conditioner, other apphances,
or by passing traffic. finally. alarm warning devices, however loud, may not warn
heating-impaired people or waken deep sleepers.
@Telephone Unes needed to transmit alarm signals from apremises to acentral monitoring
sfation may be out of sewice or temporarily out of sewice. Telephone fines are also suuect
to mmpromise by sophisticated intruders.