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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 an access control system. After a power interruption has occurred, immediately conduct a complete system test to ensure that the
system operates as intended.
•
Motion Detectors - Request to Exit
Motion detectors can only detect motion within the designated areas as shown in their respective installation instructions. 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 will impair 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 tem-
perature or if there are intentional or unintentional sources of heat in or near the detection area. Some of these heat sources could be heat-
ers, radiators, stoves, barbeques, fireplaces, sunlight, steam vents, lighting and so on.
•
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 fail-
ure of a component.
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Inadequate Testing
Most problems that would prevent a system from operating as intended can be found by regular testing and maintenance. The complete sys-
tem 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.
