How does a standard home alarm work?
Before we start dissecting the complexities of a home security system, please make sure you have your dictionary, electrical engineer's guide, a full pot of coffee, and about seven hours of free time.
Okay, now that we have the sarcasm aside, let's get real. Out of all the safety devices you'll ever encounter, a home alarm system is surprisingly one of the simplest. From the most basic door chime to the most complex video and motion-monitoring systems, all alarms systems are built upon the same basic foundation. So, put the engineer's guide away and get ready to have a much deeper understanding of alarms in about ten minutes.
Home Security Systems 101
This might be elementary, but it paints a good picture of how an alarm system is triggered to then send out a distress signal. When your finger was circling, that represented the system as active. The other finger cutting the circle off represented an interruption in the flow of electricity. Sensors that are typically magnets, buttons, or switches recognize this interruption, or break.
In a home alarm system, there are several areas where the electrical circuit can be broken, such as doorways and windows. When closed, two sensors meet and allow a constant flow of electricity. When opened, the sensors no longer meet and the flow is interrupted. And you guessed it; that break in the electrical flow causes an alarm to sound.
Attached directly into the happy flow of electricity, the motion detector sends a pulse of radar signal into an open space like your living room. Everything within this radar "picture" bounces back as a visual echo, and is recognized by the system as acceptable. Couch? Check. Television? Check. Pile of laundry? Check. It sends the same pulse several times per second, and if something else enters the picture, beep!
Although a common component to home alarm systems, motion detectors are more intended for times when no one is expected to be in the house. So, knowing this, it's probably a good idea not to wander into the kitchen for that midnight snack if your motion detectors are set.
Thinking of adding more security to your home? Find professional home alarm companies that can install a home security system for you on Kudzu.com.
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