Guantai 1080P HD CVI AHD TVI 4 Channels Video Fiber Optical Media Converters,FC, Singlemode 20Km for 1080p 960p 720p AHD CVI TVI HD CCTV Support 720P 960P 1080P AHD CVI TVI HD Cameras Default ship singlemode version (0~20KM), Optional Multimode version(0~300Meters), Leave message to us after order if need. MTBF (Mean Time Between Failure) is more than 100,000 hours Video format compatible for PAL, NTSC, SECAM Support 1280H/25f,1280H/30f,1280H/50f,1280H/60f,1920H/25f, 1920H/30f HD format