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. * 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. * IMAGE® - is a registered trademark protected by the US Trademark Law. IMAGE® products are sold by authorized sellers only * Package included: 1x Transmitter, 1x Receiver, 2x Power Adapters, 2x AV Connection Calbes, 1x IR Remote Signal Extension Wire, 1x Operation manual.