776-Wired-Wall-Mounted-Door-Chime-with-Transformer-Byron-776-p-The-Byron-776-Wired-Wall-Mounted-Doorbell-with-integrated-transformer-is-suitable-for-wall-mounting-&-makes-the-classic-lsquo-ding-dong-rsquo-sound-p-p-You-can-directly-install-the-Byron-wired-door-chime-to-the-mains-electricity-thanks-to-the-inbuilt-transformer-You-can-use-your-current-bell-push-with-the-new-door-chime-so-you-will-not-have-to-replace-your-complete-doorbell-p-p-Comes-with-a-24-month-warranty-p-