Terk LF-20S Wavemaster Wireless 2.4 GHz A/V Distribution System (Discontinued by Manufacturer) Wirelessly receives audio and video from any AV source (like a DVR, DVD player, or MP3 player) to another indoor device up to 100 feet away Plug-and play-installation--connect your gear without running extra wires from room to room Terk's 2.4 GHz WaveMaster 20 technology assures the best possible sound and picture; signals penetrate walls, doors, ceilings, and floors Multiple channel selection lets you select the best possible signal from 2 different channels NTSC and PAL video compatibility