... Port 20km,40km,60km,80km Reliable Quality Factory Price Optic Transmitter and ReceiverFeatures: * Uncompressed video, 8-bit / 10-bit ... and 1-8 channels data cardscan be installed)* RS232, RS422/RS485 compatible data interfaces * No electromagnetic interference, no radio frequency interference, no ... theoptical fuses. Consult factory for different transmission distance. Optic Transmitter and Receiver