1 battery-operated receiver (300 ft. range) and 1 push button with CR2032 battery and mounting hardware, each doorbell receiver can pair with up to 20 push buttons, each push button can pair with multiple receivers
●Melody selection: 38 different melodies at 3 different volume options
● Upgrade with Visual alerts function: built-in LED light rings on the receiver and push button give off a soft glow when the doorbell is pressed
●Portable: the flat base of the receiver makes it easy to stand the doorbell on a desk, counter or table, making this door chime extremely versatile - take it with you to the backyard, basement, garage, bedroom or office
● Easy installation: the push button comes already paired with the receiver, and mounting instructions are included for both the push button (CR2032 battery included) and receiver which operates using 3 AA batteries (not included).