Always know when your furry friend wants to be let in or out with the Pebble Smart Doggie Doorbell. Designed with a focus on dog training, this pet chime comes with a built-in treat holder behind the yellow push plate. Likewise, the receiver inside the house is triggered when your dog nudges on the push plate. Additionally, the Doggie Doorbell makes it fun and easy for your dog to learn how to use it. In fact, dogs often begin ringing the doorbell in a matter of minutes. Simply install the Doggie Doorbell inside for your pooch to use when he wants to go out. Similarly, you can install it outside for when he wants to come in. Two doorbells can work together outside and inside, giving your dog the freedom to ring in either direction.