BestDealUSA 5.8G AV Sender Video STB Wireless Sharing Device Transmitter Receiver IR Remote Use 2.4GHz ISM frequency band. Support 4 groups of channels. You can select these channels to avoid interference from signals of a wireless router, etc. Wireless transmit =200m. 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.