Another thing you can get is cameras around the house, inside and out. My son has them and the camera on the side of his house got pictures of the men and their trucks robbing the neighors house. When he is away, he can see what is going on at his house. I also like alarms, they deter most robberies from happening.
You can get different packages. You can have all your windows rigged, doors, motion detectors, and we had something under the carpet in fron of the steps. If you stepped on it, it set the alarm off.