... : house, office, shops, hotel, tire building remote control Wireless Doorbell, 24 Melody Music choices and "DingDong"Suitable for: house, office, shops ... Receiver ) : 90 x 62 x 30mmSize ( Remote Control ) : 80 x 45 x 18mmDoor Bell powered by 2 AA batteries ( not included ... )24 Melodies for selection, you can select your favoriteEasy to install, ...