3-MELODIES: features three mechanical melodies to choose from - Ding or Ding-Dong or Westminster. BATTERY-OPERATED SENSOR: the sensor requires 1x 12-Volt A23 Battery (included). ADJUSTABLE VOLUME: the volume of the alert tunes can be adjusted to best suit your needs. 100-FT TRANSMISSION RANGE: this device has a transmission range up to 100' - great for larger homes or work settings - when you want to hear the entry alert sound from a distance. PLUG-IN CHIME: this kit includes one wireless chime that can plug into any standard wall socket - quick and easy installation!. COMPATIBILITY: this entry alert kit is compatible with most Utilitech Wireless Push Buttons (sold separately). WARRANTY: this wireless kit is guaranteed with a 1-year limited manufacturer's warranty. Color: White

3-MELODIES: features three mechanical melodies to choose from - Ding or Ding-Dong or Westminster. BATTERY-OPERATED SENSOR: the sensor requires 1x 12-Volt A23 Battery (included). ADJUSTABLE VOLUME: the volume of the alert tunes can be adjusted to best suit your needs. 100-FT TRANSMISSION RANGE: this device has a transmission range up to 100' - great for larger homes or work settings - when you want to hear the entry alert sound from a distance. PLUG-IN CHIME: this kit includes one wireless chime that can plug into any standard wall socket - quick and easy installation!. COMPATIBILITY: this entry alert kit is compatible with most Utilitech Wireless Push Buttons (sold separately). WARRANTY: this wireless kit is guaranteed with a 1-year limited manufacturer's warranty. Color: White