The HDMI Repeater by CTA Digital allows you to have proficient high definition video/digital audio signal extension of your HDMI source. With this compact unit you will be able to chain two HDMI cables or attach it to the end of a long HDMI cable for continuous signal strength. This HDMI Repeater will reinforce the HDMI signal from cable to cable without diminishing signal power, quite common with the use of a longer cable. Easy to operate; just plug and extend your HDMI signal the safest way.Extends TMDS interface length as follows: 0 to 164 Ft HDMI-Cable, 24 AWG STP (Shielded-Twisted Pair) 0 to 118 Ft HDMI-Cable, 28 AWG STP 0 to 98 Ft HDMI Repeater should be connected to the device (HDTV) it should never be connected to a video source (DVD)