I can't recommend this product in all honesty. I've had two other driveway alarm systems in the last 13 years. This is my third, my first of this particular brand. I think they wear out pretty quickly because of being outside in all kinds of weather constantly. That's not the part I'm complaining about. This one was fairly difficult to set up, simply in terms of the vagueness of the instructions. My biggest complaint is that it goes off constantly. I can see it from my living room window and can see that there is absolutely nothing within its range to set it off. It does go off when a car or a person comes within its scope, but it also goes off just for no reason at all. For some reason, it seems to start malfunctioning in the mid to late afternoon. All of a sudden it just starts going off, one right after the other. As soon as it finishes, playing one tone, it automatically starts playing another and another and another. It's the same tone and the one I picked for that particular zone. But it just won't stop playing the tone! I literally have to unplug it. Once it's been unplugged for a few hours, I can plug it back in and it will work for the next few hours. It's extremely frustrating. My other two alarms never gave me this kind of problem.