You make your dog cry and look anywhere for you to let you know it needs to go! The Door Bell for Dogs can be installed in the most strategic places of the house so your dog can use it easily! Features: - Your dog will let you know when he needs to go! - Your home will be now spotlessly clean. - It features 55 ringtones. - Easy to install. Specifications: - Material: Plastic. - Available in 3 plug presentations: US plug, EU plug, UK plug. - Working distance: 300 meters. - Package includes: 2 Receiver, 2 Transmitters, 1 User manual. - Battery powered. Batteries not included.