... 2.4G Wireless AV Sender &Receiver Wireless transmit:150m Use 2.4GHz ISM frequency band. CE & FCC certificated High Quality Wireless 2.4G AV Sender & Receiver Wireless ... for large video meeting systems and multimedia class rooms. With an external CCD camera, it can realize real- ... modes of point-to-multipoint or multipoint-to-multipoint.Compatible with DVD, DVR, CCD camera, IPTV, satellite STB, digital ...