Model: PAT-350 - Wireless AV transmission solutions are suitable for large video meeting systems and multimedia class rooms - 2.4GHz ISM frequency band - Horizontal barrier-free transmission distance = 300m - Support 4 groups of channels. You can select these channels to avoid interference from signals of a wireless router etc - Compatible with VCD DVD CCD camera PC AV satellite set-top box digital TV set-top box HD network media player and other AV output devices - 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 - 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 - Package included: - 1 * Transmitter - 1 * Receiver - 2 * AV connecting cable - 2 * AC 100~240v power adapter (US plug) - 1 * English user manual