【Flexible Hanging Design】Hangs the dog potty bell effortlessly on any door or wall hook, offering adaptable placement options beyond just the doorknob. The hanging ring can be opened for easy attachment to any type of doorknob 【Customizable Length and Height】Tailor the bell's height and length to suit your dog's size and your preferences. Adjust from 12 inches to 40 inches for optimal accessibility 【Adjustable Bell Loudness】Our dog doorbells feature three detachable 1.5” large bells, allowing you to easily adjust the volume by adding or removing bells to suit your preference 【Top-Notch Durability】Crafted from heavy-duty nylon and rigorously tested for lasting durability. Solid and durable connections ensure longevity, while rust-proof stainless steel bells provide a loud and clear jingle 【Universal Compatibility】Versatile design fits any type of door, including sliding patio doors and screen doors, providing a seamless potty training solution for every household Introducing our Premium Adjustable Puppy Bell Doorbells, the ultimate solution for hassle-free potty training! With a flexible hanging design, these bells can be effortlessly placed on any door or wall hook, offering adaptability beyond traditional doorknob attachment. Customize the length and height to suit your dog's size, thanks to our innovative adjustable design. Crafted from heavy-duty nylon and rust-proof stainless steel, these bells are built to last. Installation is a breeze—simply open the hanging ring and place it on the doorknob or hook. Compatible with any type of door, from sliding patio doors to screen doors, our Puppy Bell Doorbells provide a universal solution for every household's potty training needs.