Anti Barking Device Ultrasonic Dog Barking Control Devices Rechargeable Dog Bark Deterrent Devices Bark Box with 3 Modes Dog Barking Silencer for Indoor & Outdoor Use Training & Behavior Aids

["Upgraded Barking Control - Anti-barking device for dogs adopts the latest ultrasonic technology which can well prevent your own or neighbors dog from barking easily solve the unpleasantness caused by barking dogs so that you can enjoy a calm and happy life." How To Use - The dog barking stopper will automatically sense the sound of barking dogs once it senses the barking dogs the ultrasonic bark stopper will emit high-frequency ultrasonic waves that only dogs can hear so that the dogs can stop barking and once the dogs have stopped barking the dog barking control device will automatically stop emitting ultrasonic waves. 3 Modes Adjustable - Our stop dog barking device have three adjustable ultrasonic frequencies 15KHz 20KHz 30KHz please turn the knob to test different frequency bands to get the best results. Ultrasonic penetration range is 50 feet (if placed indoors the sensitivity should be adjusted to 1). Safe for Dogs and People - Dog bark deterrent devices are safe and effective for dogs of all sizes (10-130 lbs) suitable for dogs from 6 months to 8 years old works with ultrasonic waves will not harm dogs or people the most humane anti-barking method for dogs. "Warm Tips - The stop barking device contains a rechargeable battery which can be charged with a USB cable please keep it away from water when using it and dont use it in extreme temperatures to avoid affecting the products lifespan if you encounter any obstacles in the process of using it or are not satisfied with the anti-barking effect please be sure to contact us we will be happy to help you solve the problem."]