The Swann Wireless Door Chime with Backlit Design is a fully wireless unit that allows you to set your doorbell tune from up to 32 chimes. Simply push the doorbell button and hear the melodic chime. The eye-catching backlight flashes when someone rings the doorbell unit. The speaker unit operates on 3 x AA batteries (not included), and can be placed virtually anywhere within 165' (50 m) of the push button doorbell unit. All the mounting hardware that you'll require to set up this unit is included in the pack.
Wireless Door Chime with Backlit Design
CR2032 Battery for Door Chime Unit