Highlights Use 1.2 G Hz ISM frequency band Supports 4 channel groups. You can select these channels to avoid interference from wireless routers, etc Wireless transmission is suitable for one-floor The transmitter & the receiver are used in the same channel in a pair & can be used in the modes of point-to-multipoint or multipoint-to-multipoint Compatible with DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB & other AV output devices Superheterodyne 433 M Hz IR wireless re-transmitter is fully compatible with remote control signals of DVD, DVR, CCD camera, IPTV, satellite STB, digital TV STB & 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 clear & the color is vivid. Sound is crisp & clear Supports video transmission of PAL/NTSC system & stereo audio transmission Fully hardware-designed. There is no need to install software. Plug & play Simple & convenient Specification Weight Approx:311.9g Size Approx:14 x 8 x 2.2 cm Package Contents 1 x Receiver 2 x 100~240V AC Charger (US Plug)2 x RCA cable 1 x IR extension wire 1 x Operation