(Radio Systems) Want to eliminate your dog’s or the neighbor dog’s barking? The Deluxe Outdoor Bark Control is just the hidden ticket. When the unit is within range of barking, an internal microphone picks up the sound. The unit is then activated and emits an ultrasonic sound that only the dog can hear. The dog will quickly learn that the high pitched sound stops once they quit barking. Includes a digital timer that can be programmed to turn the unit on and off at specific times. Detects and deters barking up to 15 meters away. Weatherproof and designed to easily hang from a tree or hook in your garden.