Friday, July 8, 2011

Is there a sensor or electronic device that I can install on my home to tell me if someone is in my yard?

I have a shady neighbor that live across the streets from me and I believe he walk pass my window to hear if my television is on so that he can tell whether or not I'm home. Is there a device I can install or my house or put in my yard that goes off inside when it senses someone near? I know about motion lights, but I want an actual alarm.

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