1. Entry: TXtransmitter,RXreceiver This built-in HDMI extender wireless transmission protocol can wirelessly transmit HD audio and video signal, at the same time, the equipment has excellent image processing and transmission ability, sends signal Transmission is more smooth and stable, it is a kind of economical and efficient way to extend HDMI signal. It is widely used for big screen video conferencing or home entertainment or online learning or business speech Educational training or playing games etc. more shocking, more relaxing and better for eye protection 2. Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. 1. HDMI video and audio transmission via built-in wireless transmission protocol, no wifi or internet required 2. HDMI 1.3, compatible with HDCP1.2 3. Support normal HD video resolution up to 1920x1080 60Hz 4. Transfer is efficient to ensure smooth playback 5. Built-in automatic balancing system, the image is smooth, clear and stable 6. Built-in ESD electrostatic protection circuit, comprehensive safety protection system 7. Simple and convenient installation, plug and play, no need to configure. Warm Tips: 1. RX cannot operate on its own, must be used with TX! 2. Cannot pass through walls or any barriers, pls use it in open space without barriers because walls, barriers will block signal transmission, 3. As RX, or barriers, increases, the wireless transmission distance will be shortened.