The Byron 776 classic doorbell kit with built-in transformer, is a simple to install, wired doorbell solution. This electro-mechanical doorbell creates a 'ding dong' sound, it can also be wall mounted. Simple 2-wire installation, requires 240v mains, comes with built in transformer or 8v 1 amp transformer. 1 Melody 80 Decibels 30m unobstructed range
