Heath/Zenith HE-2219-CH Wired Door Chime with 4 Unique Polyphonic Melodies, Solid Poplar with Satin Nickel Insert, Dark Chocolate Finish 3 selectable polyphonic melodies for front entrance ; Additional polyphonic melody for second entrance Adjustable volume control. Rich wood cover with metal inlay . Requires low voltage Transformer (122 C) Requires bell wire (196 C) .