... quality 2)factory offer 3)FCC certification 2.4G wireless video door phone for villa1.Using 2.4G ISM digital public frequency 2402 ... ,16 bits output rate.4.2 way intercom.5.Synchronization for video and audio transferring.6.Using OV7725 camera; 2.5” TFT ... , 1000MA.11.AFH automatic frequency-change technical, can work with wireless internet card and blue tooth under 2.4G frequency band ...