[Smart Dog Bark Control Collar] This dog bark control collar no longer triggers false triggers. The smart induction design can detect dog barking with specific frequencies and decibels, and filter out other irrelevant sounds. Purring, shaking, scratching or barking from other dogs will not trigger the collar. Anti-bark collars are only triggered by your dog’s barking. [Safe Bark Collar with 2 Modes] Our dog bark collar works in automatic mode, where the combination of sound and vibration mode can effectively and safely prevent the dog from barking. It helps your dog understand that it is not recommended to bark when it vibrates and beeps. Useful when you are away from home and your dog is alone. [Adjustable Sensitivity] This dog bark collar has 2 buttons “+-”, which are used to adjust the appropriate sensitivity level 1-7 according to the size of the dog. The higher the sensitivity level, the easier it is to release the collar. Level 4 is the most sensitive setting.