The Comnet FVT/FVR412M1 Series transmits four channels of video utilizing state-of-the-art digital encoding and decoding for high-quality video transmission, along with two channels of bi-directional data and one bi-directional contact closure over one multimode optical fiber. This equipment is environmentally hardened and suitable for use in unconditioned roadside or out-of-plant installations. The FVT/FVR412 is compatible with NTSC, PAL, and SECAM video transmission protocols and supports bi-directional RS-232, RS-422, and RS-485 (2-wire and 4-wire) data.