Ultrasonic automatic anti-bark, waterproof, suitable for small and large dogs.

Automatic Dog Bark Stop: The device intelligently captures dog barking up to 15 meters away, and automatically emits an ultrasonic sound that distracts your dog to stop unwanted barking, allowing you to enjoy a moment of peace and silence. Dog Bark Stopper: Ultrasonic frequencies are harmless to pets and completely inaudible to the human ear. If the dog is hard of hearing or aggressive, the device may not work as intended. It is not recommended to use a device against two or more barking dogs at the same time. 3 Levels of Operation: The adjustable frequency dog ​​bark deterrent device is suitable for different dogs. 15KHZ-30KHZ is suitable for big naughty dogs. 20KHZ Suitable for gentle dogs. 30KHZ Suitable for small dogs. It is recommended for dogs aged 6 months to 8 years.USB Rechargeable: The ultrasonic dog repellent builds in a rechargeable lithium battery, the device can work continuously for 30 days after fully charged in 5 hours. Red/blue color indicates battery status. Easy Installation and Waterproof: The dog bark control device can be hung on a tree, wall or fence to prevent your own or your neighbors' dog from barking. Make sure the bark controller is facing toward the dog within reach without any obstructions.