Heath Zenith Heath Zenith White Plastic Wired or Wireless Digital Doorbell Chime

16-MELODIES: Auld Lang Syne or Beethoven's Fifth or Birthday Celebration or Ding-Dong or Relax Triplet or Shorty or We Wish You a Merry Christmas or Short Westminster or Westminster, and more! WIRED OR WIRELESS: this doorbell chime can operate using a wired or wireless installation method INSTALATION: Bi-Function Wired Installation: requires 16VAC-10VA low voltage transformer, bell wire, 3X C Batteries (all not included); Wireless Installation: requires 3X C Batteries (not included) 350-FT TRANSMISSION RANGE: this device has a transmission range up to 350' - great for larger homes or work settings - when you want to hear the doorbell ring from a distance WARRANTY: this universal doorbell chime is guaranteed with a 1-year limited manufacturer's warranty ADJUSTABLE VOLUME: the volume of the doorbell tunes can be adjusted to best suit your needs COMPATIBILITY: compatible with most wired camera doorbell buttons (push doorbell button not included)