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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.
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, 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 ensure 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 jamming 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 system 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 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.
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,
3G4010CF / LE4010CF Installation manual
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