Universal Compatibility: This 24V transformer adapter is designed to wide range of smart doorbells, including Ring (2020 release, 3/4/plus, Pro 1/2), Nest, , Skybell, and . It efficiently converts 110/120V AC to 24V DC with a 500mA output, ensuring your doorbell is . Enhanced Safety & Convenience: the hassle of frequent battery replacements with this continuous charging solution. Our adapter ensures your smart doorbell is always powered, enhancing security and convenience without compromising on safety. The included 16.4ft waterproof cable offers flexible installation options, allowing you to position your doorbell in the . Simple Installation: This doorbell transformer is designed for easy setup. Follow the straightforward installation process by running the non-polarized wire along the wall from an indoor outlet to your doorbell. No electrical expertise required. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the , the Philippines,Taiwan and so on. Voltage:AC120V