The Electronic Barking Dog sounds like an angry German Shepard. The closer the potential intruder gets, the more ferocious the barking dog alarm seems to get. This type of alarm is even used to ward off and alert against bear intrusions. Bears do not like the sound of barking dogs, especially when they can’t see them. The electronic watch dog will monitor your door and will emulate barking, ferociously if necessary, when an unexpected intruder approaches your target area. Police believe that a barking dog is an excellent way to deter burglars and this one never needs food, water, or to be taken for a walk. Secure Dog is the ideal watchdog because he does what even the best living and breathing watchdog can’t do. The electronic watch dog can penetrate through thick doors, walls, and glass. And once its cord is plugged into any standard 110 VAC electrical outlet, it will stay on duty around the clock. The Electronic Secure Dog can protect homes, apartments, mobile homes, RVs, jewelry stores, hotels, factories, warehouses, public and private buildings of virtually every kind. Switch from watchdog mode to tranquil sounds of nature with a simple adjustment button. Sense movement through walls, doors, and glass to alert you of a visitor’s arrival. Very Realistic – barking gets louder and more frequent as intruder gets closer. Variable distance sensitivity, up to 7 meters, as well as volume control. Protection with none of the problems of owning a real dog. Perfect for all public and private buildings. Plugs into any standard electrical outlet. Reliable 24 hour protection. No installation required. No Maintenance. Size: 7.5”L x 5”W x 5.5”H.