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There are many types of burglar alarm systems: car alarms, home systems, alarms to keep your business safe. When reviewing your options, there are literally dozens of various components available, each one capable of monitoring different things. No matter which unit you decide to purchase, from the most expensive to the most basic, they all are centered around the notion that electricity will only flow until the current is broken by some type of interruption. The choices of burglar alarms now available use either a closed or an open circuit system. The closed system creates a circuit when the entryway is closed and the alarm is triggered when the circuit is broken, by an intruder through a window or door. The open system works in the opposite way, where the circuit is completed when the entryway is open, therefore completing the circuit and setting off the alarm. The open circuit system is a less reliable form of alarm since the intruder can simply deactivate it by cutting the wires.
Early versions of the burglar alarm featured such things as magnetic strips that opened or closed the circuit, depending on which design, over a window frame or door. The alarm would go off when the entry way was opened, since the magnetic strip would snap back and break the circuit. Another simple system functioned because of a small button which was inserted into the doorframe. When the door was opened, the circuit would break and the alarm would sound. Each of these systems, although somewhat functional, had basic design flaws. The intruder simply could close the door or window and that would continue the circuit and silence the alarm. Today¡¯s models have improved tremendously. Now, each system has its own circuit box which monitors the system and will allow the alarm to sound continuously until a particular code is inserted. The circuit box is installed in a discreet place, preventing the burglar from easily disarming the system. The problem with these wired systems is that often times a person attempts to install the system, but after hours of frustration, a professional must be called in to finish the installation. Wires must sometimes be run through walls and under floors, and if not installed properly, could take hours to determine the problem. In addition, a simple mistake like the misplacement of a nail into a wall can short circuit the entire operation, again causing hours of system malfunction.
If you find it a little too challenging to install wiring and run circuitry, you might opt for the newer, more convenient wireless alarm system. These systems use a control box which implements radio signals. The system runs checks on its own self, to assure proper operation of each transmitter, and will notify you if the batteries are running low. Besides the obvious, the wireless systems are the best buy because they can be taken along if you¡¯re moving and because they can be positioned anywhere on the property. Since wireless alarms use radio frequencies, other electrical items such as radios or TVs could interfere with the alarm system, giving false readings. For this reason, the control box must be placed as far away from intruding devices as possible.
A different type of alarm, such as a driveway alarm, is one where you can record a message which will sound if anything sets off the alarm. And, a great feature of this type of alarm is that you can record various methods for each monitored position. You can make one recording to alarm you if someone is in the driveway, a different recording to inform you of an intruder in the backyard. These alarm are generally waterproof to some extent, but will offer extreme performance if protected from severe elements. Awareness of how far the monitored spot is from the control box. If the signal doesn¡¯t have to pass through walls and such, it can extend to a thousand feet or so, but after passing through bricks and mortar, can be reduced to only a couple of hundred feet. These kinds of systems use temperature and/or movement to detect intruders. After detecting a change, a radio signal is then sent to the receiver, triggering the alarm. Each system offers its own unique way of alarming the property owner of an intruder. Do a little research on the various choices before selecting the right one for your needs. |
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