The Defiant Branded Deluxe Wired Door Chime Contractor Kit includes a 2-tone door bell chime, 1 lighted Silver push button, 1 unlighted white and black push button and a 16-Volt 10-Watt transformer. It features 2-tunes that ring separately for front and rear doors, so you know which door your visitor is at. This complete doorbell kit is perfect for new installation.