... means of radio waves and can be used for wireless sharing of AV signals of DVD, DVR, CCD camera, IPTV, satellite STB, ... -multipoint.Compatible with DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB and other AV output devices.Images received by ... H).2.4GHz module is CE & FCC certificated. Wireless application is safe and reliable. 2.4ghz Wireless Sender and Receiver Support 4 groups of channels