PREMIUM PICTURE QUALITY & STABLE SIGNAL TRANSMISSION: With HDbitT technology, you'll be amazed at how HDbitT maintains your 1080P picture quality with super stability/reliability, even at 20KM between your HDMI source and display source via single Optical Fiber. WITH LOW SIGNAL LOSS: Single-mode Fiber Optic Cable consists of an all fiber connection eliminating the need for any copper connections between the transmitting and receiving devices and it provides low signal loss, wide frequency band, and strong anti-interference. Full HD HDMI VIDEO AND AUDIO SIGNAL SUPPORT: Supports all HDMI features including full HD 1080p, deep color, lip sync and CEC. And the product also supports all high resolution multichannel audio formats including Dolby Digital Plus, 7.1 LPCM, Dolby TrueHD and DTS Master Audio. 20-60 KHZ WIDE FREQUENCY IR CONTROL EXTENSION: Let's think about a scenario. If you have a DVD player in your media room and a TV in your living room, while you are in the living room, you can still use your DVD remote to control the DVD player with IR CONTROL EXTENSION function. HDMI, USB and IR video extender. It consists of a loc moduleand a remote module that are connected by multimode or single mode fiber optic cable. Maximum distance point to point: 20 Km. Local module connectors: HDMI input, USB input (type B-female) for keyboard/mouse, IR emitter connector (minijack 3.5mm female), fiber optic connector (SC-female), and 5 VDC power connector (DC- jack-female). Remote module connectors: HDMI output for rem screenote, 2 USB outputs (keyboard/mouse), IR receiver con