Wireless remote control doorbells with 32 Songs.
Easy to install, no wire needed. Remote control range up to 80meters in open air;
Doorbell is powered by: 2x AA batteries (not included)
Doorbell button is powered by: 1 x 12V 23A battery (included)
Package：1 x Doorbell Receiver； 1 x Doorbell button； 1 x 12V 23A battery