Great for pet dog potty training, housetraining and houserbreaking; Betty way for the communication between your pets and you. Not only can be a pet dog doorbell, but also can be a service bell/doorbell for stores, restaurants, bar and hotel. The pleasant chime sound is loud as well as clearly without noisy sound, which can be heard at a distance. Bell is attached to a strong springy band, smooth without any slot to hurt their pets when they need to ring the bell. High quality solid metal hanger with brass bell; 3 screws are included to install it on the door or wall easily. Description Potty Training Instructions: 1. Firstly install the bell on door or wall. 2. Secondly interact with your dogs by ringing the bells, such as commanding or praising your dogs. 3. Repeat for several weeks, and ensure that you are always response to the ringing bell. Specification Material: Metal Color: Brass Bell Diameter: 1.57 Inches Size: 6.7 x 5.1 x 1.57 inches Weight: 1.8 Ounces Package Content 1 * Pet Dog Bell 3 * Screws