Designing a Home Security System
Any good home security system combines tightly locking up the house to prevent unwanted entry, eliminating the ways that intruders can conceal themselves on your property, and making your home feel occupied, whether you are at home or not.
Secure your doors
As a general rule, doors that swing into the house are more secure than out-swinging doors, both because the gap between the door and jamb is not exposed and because the hinge pins are on the inside. If you have an out-swinging door, make sure it has at least one non-removable pin hinge. A non-removable pin hinge has a set screw in the pin that prevents the pin from being removed.
All entry doors should be fitted with deadbolt locks. Single-cylinder deadbolts are operated with a key from the outside and a turn button inside, while double-cylinder deadbolts must be operated with a key from both sides.
Sliding patio doors are notoriously easy to break into. If you have an older patio door, one inexpensive alternative is a hinged bar mounted on either the active door panel or the jamb that swings down to wedge the door closed.
Secure your windows
Make sure all your window locks operate properly, and consider adding to the security of sliding windows by installing key locks in place of the standard sash locks.
Look at your lighting
Outdoor lighting is one of the best deterrents available, making it an important safety feature. Low-voltage lighting kits can be installed in an afternoon. With the development of more reliable solar cells and batteries, solar outdoor lighting is now more dependable and even easier to install than the low voltage lighting systems.
You want to make sure the entire area around your house can be well lit. Install motion-activated floodlights over the driveway and at the back of the house; if you can position lights so every door and window in the house is covered, you can scare away nearly any burglar.
Once you have the basics taken care of, then a home security system may be a worthwhile investment.