This little jewel is sure worth the money! For 13 years I had my old dog who alerted me when anybody came into our driveway but after he died I would have people knocking on my door before I even knew they were on the place.
We have ours at the beginning of the driveway and anytime a car goes by it we hear a loud buzz from the receiver we have in the house.
We found this at Radio Shack and they can also be found at Target's website. This is a link to Northern Tools.
I recommend this for anybody with a long driveway, an area you want to keep an eye on, a blind area or whatever security needs you have.
http://www.northerntool.com/webapp/wcs/ ... 844_534844

