Within the past decade or so, the alarm industry has witnessed considerable innovation. To better understand the technology surrounding modern alarm systems, you should begin by examining one in its most basic state. Put simply, a traditional burglar alarm is an electrical circuit built into the entry way of a building. This circuit acts a container for electricity, providing a clear pathway between two points of opposite charge where an electrical current can flow. When you open part of a circuit, you alter this pathway and disrupt the flow of electricity. Conversely, when you close a circuit, you allow for the creation of a new stream of electricity. For instance, in a closed circuit alarm system, the circuit is closed when your door is shut. Turning on your alarm initiates a new stream of electricity that can flow within this closed circuit. When someone opens the door, this opens the circuit, terminates the electrical current, and triggers your alarm.
If the concept of an electrical circuit confuses you, consider the magnetic sensors and buttons responsible for activating an alarm system. Companies will install these activation devices into doors and susceptible windows. Opening one of these entry ways will either disengage a pair of magnets or release a button, and when your alarm is on, this interruption in the flow of electricity will set off a siren, flashing lights, etc. In theory, all a burglar would have to do to turn off your alarm is shut the breached window or door. This is why modern systems incorporate a control panel. This panel receives notice when a circuit is opened or closed, triggers the alarm, and will not cancel the alarm until someone punches the appropriate security code into its keypad.
If you don’t want to guard each of your windows and doors or are afraid that these perimeter precautions will fail to keep all intruders out, motion and heat detectors can provide a secondary means of protection. The type of sensor you have installed determines which environmental changes will trigger your alarm. Certain systems detect when someone walks through a strategically placed beam of light, while others can sense a disturbance in radar reflection patterns or a spike in temperature consistent with human body heat. Despite the benefits and added security that motion and heat detectors offer, they also have the potential to trigger unwelcome false alarms.
As stated above, this overview summarizes the basic logic behind alarm systems. Countless hi-tech upgrades exist, but it is better to research these options when you have a definite idea about the type of system that you want. For example, installation companies can now build circuits into your glass windows and doors using foil wire, and your alarm will sound any time this glass is broken. Some systems can even control interior lights and appliances so that they turn on and off at random. This feature can trick potential thieves into thinking that your house or your office is occupied when no one is there.
In all likelihood, the wireless trend will also become standard as time goes on. Wireless systems operate under the same premise as hard-wired alarms, but with a handful of advanced features. They also do away with invasive construction procedures and lengthy installation times. Alarm systems represent a sizeable investment, and a lot of buyers like the idea of a portable system that they can pack up and easily transport when they move into a new home or office. Consequently, wireless technology may one day eliminate the need for hard-wired systems altogether.