Bark Recognition Technology The BarkLimiter detects bark signals solely through vibrations from a dog’s throat. This virtually eliminates false corrections caused by paw scratching or scraping of external surfaces, or other noises like the barks of nearby dogs. So your pet won’t receive false corrections for the barking of other dogs in the neighborhood, the kennel or doggy daycare. Autorise Technology BarkLimiter Deluxe is automatically set for Autorise right out of the box. Autorise starts at the lowest correction level and gradually adjusts to a level to stop unwanted barking without rising further. This gives you immediate relief from nuisance barking. You can also switch from automatic to manual settings. Built-in Bark Odometer™ helps determine the effectiveness of the manual correction level by counting the number of barks while you are away. Vibration Setting You have the option of setting BarkLimiter Deluxe to correct barks using vibration for an alternative to stimulation. Replacement Collars Personalize BarkLimiter Deluxe with polyurethane-coated 3/4" accessory collars or 3/4" woven nylon Lupine Collars (sold separately).