Alinana Dog Door Bell, Adjustable Dog Bell for Door Potty Training with 7 Extra Loud Dog Bells, Premium Bells for Dogs…

LOUD ENOUGH: 7 extra large 1.5″ metal jingle bells and metal inner ball, shed light on loud ringing sound, easily audible from other room even if dog softly touches it.
DOG EASY LEARN: After simple training, most dogs may be able to learn how to touch the bells in about someday and fully learned to hit them to go out of doors or potty next week.
LENGTH ADJUSTABLE: Two snaps design for tighten the dog bells into different belt length, makes it universal for most doorknob height, big dog, small puppy dog.
STRONG BELL METAL: To steer clear of pup chew or bend the bell it seems that, steer clear of the small metal ball go out of the bell, our dog bell use super strong metal.
EFFICIENT COMMUNICATION: The usage of dog doorbells have been taken as an easier, fun and a win-win way for dog to talk with you rather than barking, scratching.