The TL-TP40-HDC2 replaces a traditional HDMI cable with active electronics designed specifically for sending video signals up to 130 feet. Plus, built-in IR and RS232 control signal embedding allow you to also transmit remote control commands with the HDMI stream. HDMI cables are great for transmitting audio and video signals short distances, but larger buildings and larger rooms often need electronics inline to ensure signal performance. Simply pulling a long HDMI cable or connecting multiple HDMI cables together can cause signal drop out, interference, pixelization and a host of other signal and performance problems.