2.4G Wireless A/V Transmitter & Receiver /Wireless IR Remote Extender(150m ). Function and Features: Use 2.4GHz ISM frequency band. Support 4 groups ... Superheterodyne 433MHz Wireless IR Remote Extender is fully compatible with remote control signals of DVD, DVR, CCD camera, IPTV, satellite ... waves and can be used for wireless sharing of AV signals of DVD, DVR, CCD camera, IPTV, satellite STB, digital ...