2.4G Wireless Transmitter and Receiver 2.2G/2.3G/2.4G 12 channels video and Audio Synchronization 50-200M Distance 2.4G Wireless Transmitter and ReceiverTransmitting ... , video and Audio Synchronization. Distance: (Open/unobstructed Space) 50-200Mackage Including: 12 channel Receiver, Transmitter, antenna, Video cable and transmitter connecting cable Wireless Transmitter and Receiver