Have you ever watched a horror film where the villain snips the wires to a telephone or home alarm? The scariest part is realizing that, despite your home's security system, it could happen to you. In order to truly protect your home and family against the threat of break-ins, you need to invest in 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.

The two main types of wireless burglar alarms are unmonitored and monitored. If an intruder is detected, unmonitored systems sound a loud alarm that is audible in the home and for a short distance outside. If you live in the countryside, these systems are not ideal, because if you are not at home, neighbors may not be able to hear the alarm, so no one will know about the break in. Monitored services, on the other hand, detect a break-in and then send a signal to security company staff, who determine whether it is a real burglary, and then call the police.

All wireless security systems include a control panel. This is the "brains" of the system, usually located in a closet or in the basement. The control panel receives all wireless communications that are sent by magnetic switches and motion sensors located throughout the house. If a suspicious entry or movement signal is received, the control panel will sound the alarm or dial the security company's central monitoring system.

Throughout the home, inconspicuous magnetic contacts and switches are attached to doors and windows. These consist of two parts: a magnet on the door or window, and a switch placed on the door jam or window sill. They simply detect movement by noting an increase in the distance between the switch and the magnet, which only occurs if a door or window is opened or forced open. The switch sends a wireless signal to the control panel, which sets off the alarm.

Large open spaces such as hallways can be equipped with wireless body sensors or motion detectors. Infrared motion or body heat changes are detected and a signal is sent to the main control panel. The panel gauges whether the movement is a person, and then sounds the alarm or alerts the monitoring station staff.

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.

There is no doubt that any home security system can offer a certain degree of protection for your property, or even your life. However, for the highest level of protection, a wireless security system is your best choice.