Help Your Pet to Knock The Door! Ding Dong! Say goodbye to scratching, whining, and barking with a Dog Training Wireless Doorbell that lets you know when your dog wants to go potty. MAIN FEATURES ✔️PAW OPERATED Unlike most doorbells, the pet doorbell’s receivers feature a large button that can be activated with a simple touch or swipe of a paw allowing dogs of all sizes to easily use it and notify their pet parent. ✔️FULLY CUSTOMIZABLE The Dog Doorbell receiver comes with 55 polyphonic ring tones and 5 volume levels so you can tailor it to your preference. You can also put it on standby to prevent unnecessary noise without having to unplug it. ✔️PLACE ANYWHERE Velcro-lined reusable tapes allow the doorbells to be placed anywhere your pet can reach. The transmitters are also waterproof and rated to operate from -22°F (-30°C) to 158°F (70°C) making them perfectly suited for both indoor and outdoor use.