Exactly how Security Systems Function

Homeowners and companies in many cases are confused by the terminology as well as the explanations given them with a security alarm representative. Sometimes what is recommended may be a good system, but it are often beyond the budget of what many householders or businesses can afford or want to pay.

The purpose of this article is two-fold: first, to describe the fundamental system and terms most widely being used today, and 2nd, to create clear there are various amounts of protection available that can produce different investments with higher or lower numbers of overall protection to the house.


The typical electronic home alarm system today is composed of the next elements:

Cp which processes the signals received from the sensors, powers the sensors which require power, dials the monitoring central station to report alarms or events, powers the audible or visual devices, for example sirens and strobes, and gives battery back-up in the case of AC power loss.

Sensors, for example door/window sensors that need no power, numerous motion detectors, for example PIRs' or "dual" type detectors, glassbreak sensors, hold-up or panic switches, environmental sensors, for example water, CO2, or temperature, not to mention, fire and warmth detectors.

The audible and quite often visual devices which can be used in the attic or under eaves in addition to inside the dwelling.

The wire to get in touch the sensors and devices to the central cpanel, or perhaps in most cases today, the application of wireless transmitter sensors with a receiver often included in the cp so few wires are essential (the AC transformer and speak to line still need be "hard wired").

The labor and programming to really make the pieces all communicate.
The best a higher level security--and obviously one which will set you back the most--is full "perimeter" protection plus motion detector backup. Precisely what does this mean? It implies every exterior door and window (a minimum of on the floor floor) carries a magnetic switch, either recessed or surface mount so that the alarm go off prior to the intruder gets in the house. What's more, it means placing some sort of glassbreak detectors either in each room that has glass or on each window itself so that, again, the alarm would set off prior to intruder gets in.

If in addition, motion detectors are strategically placed so that from the unlikely event an intruder would somehow defeat a protected perimeter entry point, and in actual fact gain entry in the premises, although now face devices that look for motion by typically measuring the history temperature of a room against the temperature of an intruder (basis for "passive infrared technology" or PIR; that is essentially some type of specialized camera trying to find rapid modifications in temperatures measured against experience temperature).

These more complete type systems can also be typically monitored by a central station for the monthly monitoring fee. Lastly, for those interested in possible telephone line cuts (you will find, 99% of alarms systems that are monitored with a central station make use of telephone line that is certainly often exposed to the side of your home or building) there are many of backup services available, from cellular to long range wireless to TCP/IP modules for the Internet into a special receiver on the central station.

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