SainSonic PAT-330 2.4G Wireless AV Sender Transmitter & Receiver 150M, Silver Support 8 groups of channels.You can select these channels to avoid interference from signals of a wireless router.Support 1 group of AV input signal. Long rang Wireless transmission 150m in Unobstructed Place.Or suitable for one-floor with 1-2 walls.Images received by means of radio are vivid and stable, the color is flamboyant, and the sound is clear. Supports video transmission of PAL/NTSC system and stereo audio transmission. If you want to watch DVD, DVR, IPTV, satellite STB in different TVs, but do not want to use the long and expensive cables for the devices. This wireless sharing device would be the best choice for you.Fully hardware-designed. There is no need to install software. Plug and play. Simple and convenient. Use 2.4GHz ISM frequency band, multiple selective channels supported for anti-interference from wireless.The transmitter and the receiver are used in the same channel in a pair and can be used in the modes of point-to-multipoint or multipoint-to-multipoint.