As a professional wireless doorbell manufacturer, Advante Electron Ltd. can design new items and develop music IC by ourselves. Our company was found in 1994 and develops stronger and stronger.Our new items contain the following special features:1) IP44 approval water-proof transmitter2) With 32 sounds selectable, can set sound at transmitter or receiver3) Passed CE and FCC certification4) Can be installed in 64 channels to avoid interference according to clients&＃39; requirementsOur products are exported to UK, Germany, Japan, France, Poland, Spain, and the USA. With reliable quality, competitive prices and excellent service, our company and products enjoy a good reputation among our customers around the world. We welcome interested companies to contact us for further information.