Most families own not just one television, because there are multi rooms in their house. But they do not wish to buy multi cable box(set top box) and pay the month fee on it, and running many wires in room. So, the HDMI av sender(for input and output device with HDMI port) must be a good friend of them. Let's see what benefit it has. 1)Place your TV anywhere you like Watch your favourite movie in your bedroom, cheer for your favourite football team in the garden or play your kids videos in their room while you’re having dinner with your friends downstairs. Why be limited to one room when you can have the freedom to enjoy anywhere you like? The Wireless HDMI Sender connects your AV devices and lets you control them from a different room. The signal quality stays optimal, even through a wall or floor. 2)TV to TV without running cables Put an end to threading wires through your walls at home. Connect your AV devices like DVD/STB wirelessly and enjoy wherever you like. Experience full AV quality with no strings attached! The HDMI av signal will be transmitted from transmitter to receiver wirelessly.