This OREI HD-EXC-400 HDMI Extender delivers Full HD 1080P HDMI signal from your video source via single CAT6/Cat5 network cable. This device extends and splits by network devices, compatible with existing network, and intelligent auto adjustment to match cable length, IR signal transmission for control the source device. With Premium HD technology, you'll be amazed at how this technology maintains your HD picture quality with super stability/reliability, even at 400 feet away from your video source via single CAT6 network cable. Supports IR signal transmission to control media playback of the signal source device at the display location. Note: 1. This extender requires sender and receiver to work at the same time. 2. Do not mix up the HDMI to LAN sender and LAN to HDMI receiver, and the IR blaster and IR receiver. 3. Do not plug-in/out the cables, when it is in using.