Most of the precautions you can take against intruders are common sense, beginning with the recognition of where dangers exist. About half of all burglaries occur between 8 a.m. And 5 p.m. In more than 25% of burglaries, there is no forced entry, although smash-and-grab techniques are more common than sophisticated lock picking.

When forced entry does occur, it is usually done by kicking in a door or destroying a lock cylinder with a pry bar or a wrench. Front doors are not often attacked if there is another option, because usually they are visible from the street. Once inside, burglars usually search the master bedroom first, because this is where they expect to find valuables and cash.

Alarm systems. Although no home is completely burglar proof, you can go a long way toward securing your home from intruders by investing in a home-security device. However, keep in mind that security is more than something you simply buy at a store and install. A few, fundamental, common-sense precautions can be as effective a deterrent as equipping your home with elaborate security equipment.

Alarms vary widely in effectiveness, sophistication, and price, but the two basic systems are perimeter protection, which trips an alarm whenever an outside door or window is opened, and space protection, which trips an alarm whenever motion is detected. Inside the house. Both consist of sensors, a central control panel, and the alarm. Off-site monitoring is usually available, at an added monthly charge.

In some systems, the parts are hooked together with wires that must be concealed throughout the house, and in other systems the sensors transmit radio signals to the central control panel then to off-site monitoring at a central station.Put the sensors at doors, windows , and areas where they can scan the interior spaces.

Both kinds of system have a circuit that connects the central alarm to one or two alarms, in some cases to a telephone that automatically dials a pre-determined number and gives coded messages. This option is the most successful if the phone is hooked up to a home security service. Many insurance companies reduce their premiums with the installation of a security alarm.

Lighting. Outdoor lighting is another deterrent to burglars. In many cases, the burglary is committed during the day, but only after the burglar discovered the location of unlocked doors and windows on a previous night.

Bright searchlights are not necessary to maintain adequate security; rather, pick a lighting system that is suitable for all your outdoor needs: a variety of intensities coming from a variety of sources. Nor is it necessary to leave lights on all night. Switches are available that are sensitive to motion or sound.

They will automatically turn on the lights if a person moves into their range or if they detect a sharp sound, such as the clinking of a tool. After a short time, usually from 1 minute to 10 minutes, they shut off automatically. Some packaged units include this kind of switch, together with one or two floodlights.

Locks. Most burglaries are committed in homes with unlocked doors or windows, so install locks and use them. A locksmith can recommend the best ones, but they are expensive. Have solid doors with two locks each. Fit basement and ground floor windows with sash locks or similar devices.

Sliding glass doors should have security bars and pin locks. Garage and cellar doors should be locked, and windows near a back door should contain shatterproof glass. Secure upstairs windows, especially those close to climbable trees and trellises. Some police departments have programs where they send an officer to your home to advise you about potential entry points and make security recommendations.