Simple yet stylish. NuTone wireless pushbuttons allow you to identify one door from another, by setting each button to ring to a different number of notes - eight, two, or single note tones. User selectable codes prevent interference from other wireless chimes. These pushbuttons work with all NuTone wireless chimes. Sealed white rectangular shaped pushbutton with non-stick action is designed for added durability, providing many years of service. Program individual tones (eight, two, single note) so you will always know where your visitor is. Uses a CA23 battery (Included) for easy maintenance.