Introducing our innovative product: the Factory Doorbell! This state-of-the-art doorbell is thoughtfully designed for seamless installation and boasts a range of exceptional features. As a factory, we prioritize quality and guarantee a reliable device that remains unmatched in the market. Please note that the dingdong melody and battery are not included in the initial product package. However, if needed, they can be added at an additional cost. Unlock convenience and security with our Factory Doorbell today!