" [Anti-bark collar with 2 modes] - Safety 2 humanized working modes that will not cause any harm to your dog. When barking is detected, it will beep or beep and vibrate. The anti-bark collar still works To switch to the next correction level until the dog stops barking, select the trigger sensitivity from 1 to 7 with the on/off button to stop your dog from barking. Smart anti-barking device: A smart anti-barking device - Effectively and safely filters out other unrelated noises and stops your dog from barking. You can test the anti-bark collar by blowing or shouting into the sensor microphone located on the back of the receiver. 【Adjustable safety sensitivity. of anti-bark dog collar】 - This anti-bark dog collar offers 7 sensitivity levels for all possible barking volumes and different environments, allowing you to adjust the right sensitivity for your ferret. Level 7 is the most sensitive setting. You can adjust the sensitivity level using the +/- buttons to achieve the desired