Volume : Low / Middle / High
Music :  4 chord 20 musics
Working voltage : AC 110V / 60Hz  220V / 50Hz
Receiver / Transmitter : 90 x 35 x 140mm  / 45 x 92 x 28mm
Operating range : 100 ~ 150 meters ( open air)
Working radio frequency : 315MHz / 433.92MHz

• Lines grace, light touch button, various kinds of colors for your choice,
can bring you a sense of vision enjoy from lines and colors.
• Simple, vivid and wireless installation design avoid troubles and save
money when installation and don’t effect decorate environment.
• Remote control range up to 100 meters in the open air, suitable for
homes and high-rise buildings.
• All day long anti-interference system, with 100000 digital coded radio
signals, prevents the doorbell from interferences outside or between
neighbours.
• Energy saving design of environment protection.
• Delicate smart part, makes the doorbell a saluting angel of dwelling
• Delicate smart part, makes the doorbell a saluting angel of dwelling
house, office block, hotel, high-rise building, factory and so on. You will
never miss any guests.