Two To Six Wireless Home Smart Digital Remote AC Remote Control Electronic Doorbell Pager

Music: 38 music (factory default Dingdong Dingdong)

Volume: 4 levels of volume (adjustable to mute)

Transmitter: with indicator light, press and light

Receiver: Just plug in when the bell rings

Transmitter: use a 12V23A battery

Receiver voltage: 110-220V

Transmitter size: 76mm*43mm*22mm

Receiver size: 90mm*55mm*25mm

Remote control distance: 300M in a straight line on the open ground (data from factory laboratory)