Traditional chime : choose our Byron wired chime with a traditional 'ding-dong' melody to welcome your guests. Easy to install : thanks to the integrated transformer, the installation of the DBW-23082 chime is effortless. Do not forget to turn of the main ! Easily mount it to your wall and connect the 2 wires to your existing installation. For old and new installations : you can use this chime in your existing installation or when installing a new doorbell. No battery needed : the integrated transformer will provide the chime with the energy it needs to work. No battery or complicated wiring is required. Material needed : you will need screws and a drill to install your chime., Weight: 1.07585583856 pounds, Manufacturer: Byron