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Security Overview
The system comprises various components linked via a
hardwired network or a fully wireless configuration. The
system makes use of the basic components such as the control
panel - the brain of the system, with operating keypad/s
through which the commands to the control panel are
generated. In order to make the system as secure as possible
various peripheral devices will be added. These come in the
form of magnetic contacts for doors and in some cases
windows.
Next, and probably most popular, are the volumetric space
covering devices known as passive infra-red detectors which
are generally triggered by a rapid change in ambient
temperature. These will cover large areas within a home,
office, shop or factory; however they can be unstable in
very drafty environments and are not intended for outdoor
applications unless specifically designed for that purpose.
A number of highly sophisticated passives designed for
outdoors and unstable environments are available. To cover
large or small expanses of vulnerable glazed areas a
glass-break detector can be installed to detect the sound or
frequency of breaking glass. In order to create an early
warning system, outdoor beams can be installed at strategic
points in and around the property. These will activate when
crossed, indicating that the premises are being approached.
Fixed panic buttons can be installed in strategic,
convenient places throughout the premises for use in cases
of personal attack or where prompt notification of the
monitoring centre is required. Internal and/or external
sirens sound give an audible alarm, while an optional strobe
light mounted externally, gives reaction staff visual
verification of the alarm source.
All these devices are then linked via wireless transmitters
or cable, back to the control panel on individual zones or
areas.
Why is
wireless becoming the preferred option?
We have seen wireless technology become a preferred option
especially for customers currently moving into new homes and
developments those of which do not want their new home
aesthetics damaged by wiring runs and cables glued to
interior and exterior walling, another reason why wireless
alarm systems have become the replacement to wired alarm
systems is that in most cases, when new premises are built,
infrastructure in the way of conduit sleeves for cabling of
a wired alarm system are usually not installed during the
construction phase solely due to the extra cost
implications.
With many new single and double story houses being built on
poured concrete slab structures and having no open roof
access, it becomes almost impossible to drill and fit wiring
to an entire house without the wires being run visibly on
skirting or outside of the buildings walls to overcome
poured concrete slabs.

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