DSC LE4000 Installation Manual page 2

WARNING: Installer Please Read Carefully
Note to Installers
The Warnings on this page contain vital information. As the only
individual in contact with system users, it is the installer's
responsibility to bring each item in this Warning to the attention of
all users of this system.
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 emergencies 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 the reasons may be:
Access by Intruders
Intruders may enter through an unprotected access point,
circumvent a sensing device, evade detection by moving through
an area of insufficient coverage, disconnect a warning device, or
interfere with or prevent the proper operation of the system.
Component Failure
Although every effort has been made to make this system as
reliable as possible, the system may fail to function as intended due
to the failure of a component.
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 jamming or other inadvertent radio signal interference.
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 important that your security
system be reviewed periodically to ensure that its features remain
effective and that it is updated or replaced if it is found that it does
not provide the protection expected.
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 keeps the system in good operating
condition.
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.
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 attempted 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.
Insufficient Time
There may be circumstances when the system operates as intended,
yet the occupants will not be protected from an emergency due to
their inability to respond to the warnings in a timely manner. If the
system is remotely monitored, the response may not occur in time
to protect the occupants or their belongings.
Motion Detectors
Motion detectors can only detect motion within the designated
areas as shown in their respective installation instructions. They
cannot discriminate 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 covered by these beams. They cannot detect
motion which occurs behind walls, ceilings, floor, closed doors,
glass partitions, glass doors or windows. Any type of tampering
whether intentional or unintentional such as masking, painting, or
spraying of any material on the lenses, mirrors, windows or any
other part of the detection system impairs its proper operation.
Passive infrared motion detectors operate by sensing changes in
temperature. However their effectiveness can be reduced when the
ambient temperature 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, barbecues, fireplaces, sunlight, steam vents,
lighting and so on.
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 batteries 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,
renders 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 ensure that the
system operates as intended.
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.
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 carelessness or safety hazards such as smoking in
bed, violent explosions, escaping gas, improper storage of
flammable materials, overloaded electrical 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.
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.
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 are
be alerted or awakened. Audible warning devices can be interfered
with by other noise sources such as stereos, radios, televisions, air
conditioners, other appliances, or passing traffic. Audible warning
devices, however loud, may not be heard by a hearing-impaired
person.
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