Guantai 1080P HD CVI AHD TVI 4 Channel Video Fiber Optical Media Converters with RS485 Data,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