General description Our ultrasonic bark control device provides a safe and effective solution for dog training and bark control. It can effectively train your dog to stop undesirable behaviors such as barking, digging, eating dangerous food, and fighting. This device is suitable for dogs of all sizes, utilizing ultrasonic technology to attract their attention without affecting humans. Technical specifications Product Dimensions: 110 x 60 x 40 mm Control radius: 16.4 feet Frequency emitted: 25 kHz ultrasonic waves Power: Requires 4 AAA batteries (included) Installation Simply insert the 4 AAA batteries to power the device. Usage Press and hold the button to emit ultrasonic sound that only dogs can hear. The LED indicator lights up green when the device is active. For effective training, wait until the dog calms down before rewarding it with snacks or petting. Training is required for long-lasting results. Other information Not effective for dogs with hearing problems. Not recommended