The ComNet FVT/FVR41 multiplexer simultaneously transmits four channels of video over one optical fiber utilizing state-of-the-art digital encoding and decoding for high-quality video transmission. These environmentally hardened units are ideal for use in unconditioned roadside or out-of-plant installations. These units are completely transparent to and universally compatible with any NTSC, PAL, or SECAM CCTV camera systems. Features for FVT/FVR41 Series Digitally encoded video transmission, transmits 4 real-time color video signals on one optical fiber Exceptionally low video distortion with zero Performance Variation vs. Optical Path Loss Wide optical dynamic range: optical attenuators are never required NTCIP compatible Designed for installation in harsh out-of-plant/unconditioned industrial or roadside operating environments (-40º to +75ºC ambient). Fully compliant with the environmental requirements of NEMA TS-2 for Traffic Signal Control Equipment Robust design ensures extremely high reliability in unconditioned out-of-plant environments Automatic resettable solid-state current limiters Status indicating LEDs provide rapid indication of critical operating parameters. Five year warranty Made in the USA Voltage transient protection on all power and signal input/output lines provides protection from power surges and other voltage transient events. Compatible with NTSC, PAL, or SECAM Video Standards Standard ComFit models are hot-swappable. ComFit standard form factor is designed for wall, surface, rack, or DIN rail mount installations (using optional card cage or DIN mounting bracket).