Terk Technologies Leapfrog LF-30S Wireless 2.4 GHz A/V Distribution System 2.4ghz Frequency Transmission Clear, Reliable Reception &amp; Remote Control Capability Up To 150ft Away Transmits Video &amp; Stereo Audio Through The Air From Main Tv To Tus Located Anywhere In Home Wirelessly transmits audio and video from any AV source (like a DVR, DVD player, or MP3 player) to another indoor device up to 150 feet away Plug-and play-installation--connect your gear without running extra wires from room to room Transmits via 2.4 GHz frequency for clear, stable signals; signals penetrate walls, doors, ceilings, and floors Multiple channel selection lets you select the best possible signal from four different channels Built-in modulator ensures easy connection to any TV, new or old, without special connections