Flexible and Effortless Installation: Designed to adapt to various home environments, this waterproof outdoor wireless doorbell offers two installation options: secure it with screws for long-lasting stability or use the included adhesive mount for a drill-free and hassle-free installation. Ultra-Long 300m Wireless Range: Enjoy a stable and reliable connection with an impressive range of 300 meters. Whether you're in the basement, backyard, or upstairs, this wireless doorbell ensures you'll never miss a visitor. Smart Memory Function for More Convenience: No more reconfiguring your settings! This waterproof outdoor wireless WiFi doorbell saves the last selected melody and volume level, even after a power outage, for a seamless experience every time IP55 Waterproof and Weatherproof: Designed to withstand extreme weather conditions, such as heavy rain, snow, or extreme temperatures, this wireless doorbell ensures year-round reliability for homes, offices, and apartments Customizable