How Wireless Security Systems Work to Protect You

March 12, 2008 – 6:10 pm
by Alastair Lydeard

Many Hollywood films show the burglar or villain having a rather easy time of breaking into a home. They simply snip the wires leading to the home alarm system, and voila, instant entry. One of the answers to this problem is to have a system without wires — a wireless security system.

These wireless burglar alarms use radio waves to communicate with other components instead of using wires. The potential burglar cannot figure out how to cut wires to disable the system, so gives up.

There are two basic types of wireless burglar alarms available today. The first kind is activated by an intruder, but the alarm is only audible to the homeowner and nearby neighbors. These systems are less useful if you live in a rural area, and are not home when the break-in takes place. The second kind of wireless security system includes a monitor that will detect a forced entry, and then communicate that fact to a security company. The company staff will confirm whether it is a genuine break-in, and if so, will immediately call the local police.

The control panel is the brains of all wireless security systems. It is usually found in the basement or in a closet. The control panel is where all wireless signals are sent from the various motion sensors and magnetic switches placed throughout the home. If a suspicious movement signal or entry is detected, the control panel sounds an alarm, or phones the security company’s monitoring service.

Magnetic contacts are attached to doors and windows. These small, inconspicuous devices consist of two parts: a switch installed inside the window or door jam, and a magnet placed on the door or window. If the distance between the magnet and switch increases, as in the case of forced entry, the control panel will receive a signal and sound the alarm.

Large hallways are sometimes equipped with body sensors as part of a wireless security system package. These devices use passive infrared motion detection methods to sense motion or body heat. If motion is detected, a signal is sent to the control panel. At that time the panel will analyze the level of threat, and then decide whether to alert the central monitoring station.

To enter or leave your home, the wireless security system must be deactivated or activated. You simply enter the password on a keypad near the main entrance to your home, making setting the alarm easy to do. Remote control devices also come with some systems, just like car alarms, so that owners can operate some features from a distance. Some systems allow owners to switch lights off or on remotely, giving the appearance of a home that is occupied.

Some wireless systems also use hidden or wall-mounted cameras that are connected to a video unit and VCR. All movement detected on the cameras is recorded by the VCR. Depending on the system, the cameras may be monitored by staff at the security company.

A home security system is a good idea for protection and peace of mind. But for the highest level of security, consider a wireless system as the best choice, because of the enhanced features offered.

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