xidin video transmitter/data transceiver and video receiver/data transceiver series utilizes state-of-the-art digital encoding and decoding for high-quality video transmission that exceeds the requirements of EIA RS-250C for Medium-Haul  Video Transmission. These environmentally hardened units provide transmission of 8  bi-directional independent video channels, sixteen bi-directional audio channels, sixteen bi-directional data channels, 8 E1 channels and one 100M Ethernet over one single-mode or multimode optical fiber and are ideal for use in unconditioned roadside or out-of-plant installations.The product is widely used in the field of video surveillance, national defense and etc.