... -FCC,RoHS,CE -Deskstop design Remote control for digital and full-duplex Widely used in villa ,house ,window intercom High quality ... 2).World Public Frequency 2.4G data Voice, image transmission3).Full-duplex hands-free call, clear audio and video.4).Visiting ... Other optional function: Automatic image storage, photo taken function 11)Full-duplex, hands free call Parameter Working current 150mA SNR Voice ...