Color: Black - Use 2.4GHz 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 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 STB digital TV STB 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 STB digital TV STB 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 clear and the color is vivid. Sound is crisp and 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 - Package includes: - 1 x Receiver - 1 x Transmitter - 2 x 100~240V AC Charger (US Plug) - 2 x RCA cable - 1 x IR extension wire - 1 x Operation Manual