Flexible Use: The installation of dog bell button and receiver is very flexible and simple. The of dog bell button is very and easy to clean. It can be attached to the ground, glass, door, wall, etc. The receiver can be plugged into any socket, plug and play. Simple Touch: No need to press the button, just touch it lightly. For dogs of all sizes, as long as your dog knows how to touch the button, these wireless dog doorbells for defecation training are suitable for it. Free Setting: The receiver has many different ringtones and five volume levels. You can set different ringtones for the two buttons. The volume of 0110dB can be heard even in the kitchen and the second floor room. Remote Remind: Remote working open area, working range up to 500 feet, that is, 150 meters. Whether you are on another floor, in the garden or in the kitchen, the receiver will remind you that your pet is at home when the dog touches it from outside. Dog Doorbell: The dog can activate the wireless dog door bell through the nose or paw touch. You can use the dog doorbell to the dog to use the doorbell when going out, going home, going to the toilet or going to the toilet.