The product consists of a transmitter and a receiver. It adopts an advanced 2.4GHz wireless transmission scheme and has the advantages of a long transmission range, strong anti-interference and high mobility. It can transmit AV signals of DVD, DVR, CCD camera, IPTV, satellite set-top box, digital TV set-top box and other similar devices, by means of radio waves and receive them at distant end and input them to a TV set to be displayed. Moreover, the IR remote controller can be used at the receiving end to realize the function of wireless control of devices from another place. It enables you to easily realize wireless sharing of HD AV data and enjoy untrammeled hi-fi audio and visual effects. 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 transmission is suitable for one-floor. 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 set-top box, digital TV set-top box and other AV output devices. Superheterodyne 433MHz IR wireless re-transmitter is fully compatible with remote control signals of DVD, DVR, CCD camera, IPTV, satellite set-top box, digital TV set-top box and other AV devices. The product is equipped with super strong IR signal transmitting function or used in conjunction with an IR signal extension wire. Images received by means of radio are vivid and stable, the color is flamboyant, and the sound is clear. Supports video transmission of PAL/NTSC system and stereo audio transmission. Fully hardware-designed. There is no need to install software. Plug and play. Simple and convenient. Dimensions: 10cm (L) ×8.5cm (W) ×3.0cm (H). 2.4GHz module is FCC CLASSB certificated. Wireless application is safe and reliable.