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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 will be alerted or awakened. Audible
warning devices may 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.