But for the camera to be effective, wouldn't you have to be recording on a tape somewhere 24 hours a day? I'm in a one story house and placed one motion detector in the dining room on the wall so it sees the big window in that room, plus it sees the front door and anyone coming down the hallway. So that seems to be working well, but yes that is if they're already inside.. I live in a community and all the houses are close together so there's always a lot of motion so it isn't practical to have a motion sensor outside the house set off the alarm because I think it'd be going off all the time with cars going by, people walking on the sidewalk, etc.... I have all the doors and windows covered with the door/window sensors. I'm thinking about also getting a glass break sensor for the big window and sliding glass door, but those are 3rd party and just sound at the source..Kind of hard to secure this kind of house.. In the x10 videos, they always show a big house that isn't close to other houses. I don't have a yard, either..