DIY Security Alarm Systems

Purchase a wireless security system that has enough sensors for every door and window in the house. Wireless systems are more practical for self-installation than wired systems, and the system can only be useful if it protects every entrance into the home.

Stick the transmitter for the door and window sensors on the frame of the door or window. Most transmitters should have batteries included, but if not, put the appropriate battery in each one.

Attach the magnet for each sensor across from each transmitter on the door or window itself. This will trigger an alarm signal from the transmitter when the magnet is pulled away when the system is turned on.

Drill a hole for your control panel into the wall where you want it to go. Ideally, the panel should be a convenient distance from the front door but out of sight if you're looking in the window.

Use the drill to put a second hole under the nearest electrical outlet so the panel can get power. Avoid using an outlet that is controlled by a switch, because this could shut your system off accidentally.

Attach the control panel over the first hole and run its power cable from the panel, through the wall and into the electrical outlet.

Repeat the same attachment process of drilling two holes and running the power cable through the wall for your alarm siren. The siren should be in a central location, but it will likely be loud enough for you to hear it anywhere in the home. Use a screwdriver to program a disarm code into the siren by flipping switches on the side of it. If the siren doesn't have switches, check your manual for the proper programming procedure.

Turn on the alarm panel by pushing the "On" button and program it in accordance with your manual instructions. Panels function in various ways, depending on the make and model. Test the system to verify it is working properly once the panel is programmed. Your disarm code should be the same one that you programmed into the siren.

Place alarm stickers or signs around your exterior doors and windows to alert potential intruders that there is an alarm system in place. Ideally, the system will function as a deterrent by driving intruders away before a burglary attempt is made.