A burglar alarm takes care of the internal security of your house. The burglar alarms, also known as security alarms (or Home security systems) are deliberately contrived to guard your house against break-ins. Today you can discern different kinds of alarms with different working principles – developed over the years.

Presently, sophisticated burglar alarm ranging from miniature, self-contained noisemakers, to intricate, multi-zoned systems having color-coded computer monitor outputs are available. This also applies to portable alarms, which you can use to protect your cars or other vehicles and its contents.

You must have, if not extensive, at least a decent knowledge about the types and functioning of burglar alarms before you decide to buy one that suits you. Well, the first thing you should know is that fundamentally every alarm system has triggers. The triggers are set off whenever an intruder tries to enter your premises.

Now, there are basically two major types of burglar alarms. One that sets of when some body breaks the electrical circuit, and the other, which gets tripped when it senses motion.

Main types of burglar alarms

As you have already understood that there are mainly two kinds of burglar alarms. To know more about these alarms you can learn the details below:

Electric Circuit – These are the most simple alarm systems that use electrical circuits. Generally, you can employ them to protect the borders of your house, that is the probably the entry points to your house that the burglar might use. These security systems are further divided into two types:

a) Closed-circuit systems – In this system as long as your door is closed the electric circuit remains closed and whenever somebody opens the door, the circuit becomes discontinuous, and the alarm is set off.

b) Open-circuit systems – In an open circuit what happens is when somebody opens the door the open-circuit is completed and electricity starts flowing so the alarm is prompted.

Motion Detectors – These are the other type of security systems. They can detect burglars who have already entered your house. Their principle of working is to send out radio energy and observing the reflection pattern. Now when someone walking into the room obstructs the reflection pattern, the alarm gets active and sends a signal to the control box.

If you are looking for a full proof security system to protect your house, you can use the combination of the motion detectors and open or closed circuit alarms.

How does a Burglar Alarm work?

Now-a-days you would find that most of the Burglar alarms are available in electronic form. Lets see how they work: the control unit of the system is connected with the sensors through either narrowband RF signal or low-voltage hardwire and these in turn are joined to a means, which announces the alarm, to extract response.

The opening of a door or movement of a body sensed through passive infrared (PIR) is detected by these security sensors. In the new construction systems the hardwire is prime, as its economic. Where as the retrofits wireless systems are economically more viable and can be installed faster.

There are various ways in which the modern burglars alarm functions. The alarms can even snoop the variation in temperature or activities in any part of the house where it has been installed. There are sufficient choices of home burglar alarms available, just decide which one fits you the best.

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