We even can place it to a small board,and let it laying there by the door or where we liked. 【Touch Sensitive dog doorbell】Smart dog training bells for door responds to a gentle touch,especially suitable for puppy bells for door potty training. 【Professional & Compliance】Smart bell for small to large dogs. The receiver: Simply plug it to an AC outlet. Sonette Sans Fil Potty Bell EverNary Dog Door Bell, Wireless Doggie Doorbells For Potty Training,Dog Bells To Go Outside, Dog Bells With Waterproof Touch Button, Dog Bell With 1 Receiver And 3 Transmitters, Black Potty Waterproof Outdoor Dog Bell Technical Parameters Receiver working voltage: 110-260V EverNary WiFi Smart Dog OIF8 Door Bell for Potty Training,Tuya Wireless... Put the food outside the door, and then show the dog how to ring the bell. 【User friendly doggy door bell】dog door bells for potty training install in seconds,plug and play,can be placed under the eaves outside the door,also when they want to come back in with this dog bell for door potty training. So put them out anyway! Include detailed instructions and training suggestions,helps you quickly teach your dog to ring a bell to express the need to go outside and potty! EverNary Dog Door Bell Wireless Doggie... EverNary Dog Door Bell, Wireless Dog Doorbells... EverNary Dog Door Bell, Wireless Doggie... EverNary Smart Dog Door Bell for Potty Training... EverNary WiFi dog door bell is easy installation, modern stylish design . EverNary Dog Door Bell,Smart Wireless Dog Doorbells For Potty Training Bells Waterproof Touch Button Bell Dogs Go Outside 1 Receiver 1 Transmitter The transmitter: Just mount them where you need! Users can set any music as doorbell ringtone according to personal preference. When we are training our dog, can place it where needed. When they do it, praise them and immediately open the door. 23A 12V Batteryx3 (included), Mini screwdriverx1 Packing List Plug-in Receiverx1, Transmitterx3, Double-sided adhesive x3, User manualx1 Transmitter waterproof grade: IP55 A flashing indicator light is easily noticed.