Sewell Direct SW-29784 5.8 GHz Wireless A/V Sender and Receiver Support 8 groups of channels. You can select these channels to avoid interference from signals of a wireless router, etc. 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. Compatible with DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other AV output devices. Supports video transmission of PAL/NTSC system and stereo audio transmission. Images received by means of radio are vivid and stable, the color is flamboyant, and the sound is clear.