In 1852 the American Edward Holmes invented the first electro-mechanical burglar alarm. Prior to this the family watch dog was the usual form of protection from intruders. Holmes’ invention was quite simple. Trip wires were places around windows and doors. When a wire was disturbed a solenoid struck a gong, thus alerting the residents of possible danger. It was well received by the public, and was not improved upon until the next century.

There are three main components to the basic burglar alarm system: the detection device, the main control unit, and the siren or sounder. The detection device, depending on what it’s set for, can monitor motion, heat, noise, shock, vibration, and smoke (if the unit is also used for smoke detection). When the device is triggered it sends the message to the main control unit, or the brain. The data is quickly analyzed and it is then determined whether or not to sound the alarm.

A wireless burglar alarm can be easily installed by most homeowners, without the need for professional help. There are no wires to install and the components can be placed just about anywhere. There is a radio transmitter/receiver in each component of the system. The control unit receives data via radio waves from the transmitters. It is very easy to relocate any parts of the system, or add additional detectors at any time.

Some people who want a burglar alarm choose to have a professional company install a monitored home security system. This protects the home 24 hours a day, and gives the homeowner peace of mind when away from home. In this system, when the detection device is triggered not only does an alarm sound, but the agency in charge of monitoring that system is alerted. The monitoring company also maintains the system to ensure it stays fully operable, so there is little the homeowner needs to do as far as maintenance.

Probably the easiest burglar alarm to install without a professional is a magnetic switch. They are used on doors and windows. There are two parts: the magnet and the switch. When properly installed, the magnet and switch line up on the door or window. When the connection between the two is broken (the door is opened, for example), the alarm sounds. When they are reconnected though, the alarm usually stops.

There are different reasons to have a burglar alarm, and they are no longer just for the wealthy and business owners. They are still used to protect valuables, but are also widely used to protect the family as well. Not all intruders are after monetary riches. The cost of home security systems has decreased, making them very affordable.

It is very important to choose the right burglar alarm. The money you have available to spend on an alarm, if you are able to install it yourself or need a professional to do the job, and why you need the alarm system are all key points to consider before you make a purchase. To ensure that you are completely satisfied with your choice, do some research and educate yourself on the alarms available.