This device can transmit composite video and stereo audio signals, over CAT5e or higher twisted pair cable up to a maximum distance of 600m*. Its compact design and easy installation make it ideal for corporate, education, CCTV and home cinema use or any other situation requiring AV distribution. Use our CAT5e/6 cables or UTP CAT5e Solid Core cable which are sold separately. * Note: maximum transmission lengths are dependent on the application and the twisted pair cable used. This product has been tested to a maximum distance of 600m in a CCTV installation, using a single network cable between the transmitter and the receiver. Also available is the LINDY CAT5e/6 AV Extender Face Plate System a modular range of extenders, including VGA, S-Video and audio types, which can be mounted flush to a wall or pattress box for a really tidy installation.