Discount Computer Parts Center's multi function secure dog surveillance system helps you keep on guard against theft and vandalism. The advanced detection system detects any type of motion within 7 meters through any medium such as wood, cement, brick, glass, paper, air, cardboard, curtains, and much more. When motion is detected, the system will automatically initiate the alarm: imitating a vicious dog barking. Very effective in such applicable locations like your home, office, factory, warehouses or any place that needs the constant security of a guard dog.