The Pebble Smart Doggie Doorbell can be installed in minutes, without any tools. The adapter is mounted on a door or a wall near a door, either inside or outside, with the included mounting tape. It houses the transmitter inside. The receiver (or chime) is placed inside the house.
The built-in treat holder behind the yellow plate helps training your dog to use the doorbell quickly. When your dog nudges the yellow push plate, the receiver or chime inside the house will be triggered.