1. HDMI video and audio transmission via built-in wireless transmission protocol,no need wifi or internet 2. HDMI 1.3 ,HDCP1.2 compatible; 3. Support regular HD video resolution up to 1920x1080 60Hz ; 4. The transfer is efficiency to ensure that the playback fluency; 5. Built-in automatic balance system, the picture is fluent, clear and stable; Can't go through walls or any barriers,pls use it in a barrier-free open space because the walls,barriers will block signal transmission, support longer transmission distance and more stable and high quality,buy with confidence TX=Transmitter,RX=Receiver This HDMI extender built-in wireless transmission protocol,it can wireless transmit HD audio and video signal, at the same time,The equipment has excellent image processing and transmission capacity,makes signal transmission more smooth and steady,is a kind of economic and efficient way of HDMI signal extension. It is widly used for Big screen video Conference / home entertainment / online learning / business speech education training /playing game etc. more shocking,more relax, and is better for protecting eyes The built-in ESD electrostatic protection circuit, comprehensive security protection system; Simple and convenient installation, plug and play, do not need to set up. Color: As Shown Material: plastic Package Contents: 1set x HDMI wireless transmitter