Introducing the FRCOLOR Lanyard Portable Dog Door Bell, an essential tool for pet owners who want to train their dogs to signal when they need to go outside. This handy device is made by FRCOLOR, a trusted brand in the pet supplies industry. The bell is easy to use and comes with a lanyard for convenient portability. It is perfect for those who want to avoid scratches on their doors or walls caused by dogs who need to go outside. The bell is suitable for dogs of all sizes and can be used for both indoor and outdoor training. It is the perfect addition to any pet owner's training routine!