The Wired Two-Note Classic Doorbell Chime Kit has everything that you need to set it up yourself, with (1) doorbell chime, (1) 16V/10VA transformer, and (1) surface mount lighted push button. With these simple tools, your home is ready for hardwired installation that will work on the front door (2-note sound). They're easy to install and can easily be mounted in decorative manner to your home's indoor/outdoor wall. Newhouse Hardware is focused on providing their customers with durable, stylish, and efficient hardware products. They provide fixtures of the highest quality that you can depend on for several years to come. By reducing costs on replacements or repairs, these products easily save you tons on money, time, and effort.