Thanks to the wireless doorbell DBY-21132 from Byron, you can hear directly who is ringing your doorbell. The plug-in doorbell fits into any socket and has a flat bottom so it doesn't obstruct other plugs. This easy-to-install wireless doorbell can be placed anywhere. The doorbell set consists of a high-quality indoor doorbell and a weather-resistant doorbell button for outdoor use. The doorbell button operates with the included CR2032 battery and can be installed on any door. The plug-in doorbell fits into any socket, and with a range of up to 100 meters, it can be plugged in anywhere in the house. Can't hear the doorbell while working in the attic or garden? With this wireless doorbell set, that's no longer a problem; you won't miss any visitors. Choose your favorite melody from the 36 options available for the doorbell and set the maximum volume to 80 dB according to your preference, adjustable to 25%, 50%, 75%, or 100% volume. This way, the doorbell can be customized to your liking. Use the included double-sided tape to attach the waterproof doorbell. The plug-in doorbell can be placed anywhere in the house. Installing the doorbell button and doorbell takes just a few seconds and is quick and easy. This doorbell is easy to expand. Would you like to add a doorbell button to your back door so your visitors can ring there too? That's possible. The Byron BDY doorbell buttons can be connected to any doorbell. Different melodies can be selected on the inside of the doorbell button, so you know when someone is ringing the front door or when the back door is being rung.