HDMI fiber extender is a device transmitting HD audio and video signal via bidirectional single fiber cable. It transmits your HD display with the high resolutions 4K60 AV up to 20km. It supports IR, RS232, R/L and KVM function. By using bidirectional single fiber LC interface, it has the characteristics of low cost and stable signal transmission . It can be used in security monitoring, high-definition signals between buildings, square large screens and other long-distance HDMI signal transmission fields.