Doorbell industry's most melodious sound: 16 polyphonic， 12 music!
Blue LED indication， dancing with the sound， the sound size adjustable.
Remote control distance of 150 meters long， strong anti-interference， high sensitivity!
Built-in thermal fuse， no case of spontaneous combustion temperature.
The most advanced SMD materials， higher product reliability rate.
SMT + RF technology， DIY design mode of operation， easy to install!
Unique classic packaging， sell high-end， it is worth collecting.