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These days, one of the most worrying things in people's life is
security. With the increase in population of the cities, everybody
tries to get protection any way they can. That makes more and more
people look for home security systems. You can find an enormous variety
of private security machines. Modern technology helps to keep people
safe in their homes, avoiding thieves and other types of crime.
Alarms
are the widest used device in homes with security systems. They consist
of a system of sensors connected to a control unit that, in turn, is
connected to a means of announcing the alarm, to hopefully get a
response. There are a lot of different types of alarms. You can find
safety alarms, intrusion alarms and fire alarms. Some are dedicated to
only one mission, others can be and multi-function alarms, that are
simultaneously intrusion, fire and safety.
Sophistication ranges from small and compact alarms to complicated and colored displayed ones.
Fire
detectors are quite simple. You can find three types of them. The ones
that react to high temperatures and fast temperature rise, the ones
that react to the light spectrum of flames and the ones that react to
smoke or chemical products.
The burglar (intrusion) detectors can
be of two different classes: point detectors and area detectors. With
point detectors you must pick a specific point where intrusion should
be indicated. Area detectors indicate intrusion of a protected area,
and usually use ultrasonic technology for that.
Safety sensors
are more complicated and sophisticated, because they are supposed to
react to a lot of different danger situations at the same time, such
as: gates and valves open or closed, low oxygen concentrations,
excessively high or low temperatures and excessive carbon monoxide (or
other toxic gas) concentrations.
With modern electronic devices,
alarm responses are no longer human. Depending on the time, the zone
triggered and the number and sequence of zones, the system can call the
ambulance, can call the police, the fire department, or the property
manager. That is a huge advance in home security. The biggest problem
with alarms and cameras was that they always needed a human response in
order to be useful, but with this new technology, house owners can be
more relaxed because the system is capable of calling for help if he is
not able to. Cameras are also a widely used mechanism in home
security. Nowadays you find them all around public and private
properties. In homes, people usually put them at the entrance of the
house and install a monitor inside to see who is outside knocking on
the door or trying to get in.
All these electronic devices are
quite expensive. The technology used in these systems is quite
sophisticated and complex. But it is also possible to find not so
sophisticated and expensive alarms and cameras, so if you don't have a
lot of money to spend on home security and want to keep your house safe
from intrusions and other dangers, don't think twice...
Michael Russell -
Your Independent guide to
Home Security
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