Anti-barking Ultrasonic Bark ArresterProduct information: Applicable object: Dog Colour: Black Weight: 195g working principle: Modis Automatic Ultrasonic Bark Control is an automatic bark control that uses ultrasound to correct dog barking habits. It monitors the dog's bark in real time and automatically releases ultrasound to stop the dog's nuisance barking. After a period of time, the dog will form a conditioned reflex that "barking will bring discomfort to it" and gradually develop a