General description The Anti Barking Dog Ultrasonic Device is an effective solution for controlling excessive barking in dogs. It operates automatically and is designed for both small and large dogs, making it versatile for various breeds. With a sonic penetration range of up to 50ft, it can be used indoors and outdoors, providing a comprehensive approach to dog training. Technical specifications Range: Up to 50ft Type: Ultrasonic Waterproof: Yes Installation Can be easily hung or mounted on a tree, wall, or fence post. Ensure the device is facing the dog within a clear range for optimal effectiveness. Usage Turn the knob to train the dog's behavior effectively. Allow up to 2 weeks for training to see results. Not recommended for use against multiple barking dogs simultaneously. Other information Safe for pets; the sonic sound is harmless. May not be effective on deaf or hard-of-hearing dogs. Some dogs may initially be afraid or dislike the ultrasonic sound.