This product uses the vibration sensor for sensitivity distinction. When the
sound of the dog barking reaches a certain frequency, it will trigger the
sensor. The device will start to work.

Our collar with build-in smart barking detection chip, only your dog’s barking can trigger the collar

Yes, it is safe and harmless. All our products are comply of ECMA standard. As long as you use our products according to the manual,it is totall safe.

Of course, please turn the grade of shock mode to 0

The Bark Control Collar is safe and effective for most breeds and sizes of dogs, though it may be too large for dogs under 6.6 pounds to wear comfortably