The Swann Wireless Door Chime with Mains Power 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 design lights up when someone rings the doorbell unit. The speaker unit can be set up at a distance of up to 165' (50 m) from the push button doorbell unit. It operates on mains power, so you don't need to worry about replacing the batteries when they run out. All the mounting hardware that you'll require to set up this unit is included in the pack.
Wireless Door Chime with Mains Power
23 A Battery for Doorbell Unit