Heath Zenith Selectable 8-note Melodies Wired Door Chime (LE-58-B, Plated Satin Nickel Chime Cover) Plated Satin Nickel Chime Cover 8-note Whittington or Westminster Melody (front door) 2-note (Ding-Dong) melody for additional entrance Adjustable Volume Control Requires bell wire & low voltage transformer (16VAC-10VA)