Brand new and high quality,buy with confidence Note:RX=Receiver, TX=Transmitter, the RX cannot be used alone, it must be used with a TX 1 TX can pair with up to 2 RXs,pls buy the RX seperately as you need 1.0 Introduction: 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. 2.0 Features: 1. HDMI video and audio transmission via built-in wireless transmission protocol, up to 50 meters under 1-to-1 mode,up to 30 meters under 1-to-2 mode Can't go through walls,pls use it in a barrier-free open space, because the walls,barriers will block signal transmission,the actual transmit distance depends on the actual use condition, if need to use go through wall,pls contact us. 2. HDMI 1.3 compatible; 3. In accordance with standard HDCP1.2 ,high-bandwidth digital content protection technology; 4. Support regular HD video resolution up to 1920x1080@60Hz (do not support i resolution); 5. The transfer is efficiency to ensure that the playback fluency; 6. Built-in automatic balance system, the picture is fluent, clear and stable; 7. The built-in ESD electrostatic protection circuit, comprehensive security protection system; 8. Simple and convenient installation, plug and play, do not need to set up. 3.0 Packaging Accessories FOR 1 TX 1 RX : 1. HDMI Transmitter------------------------------------------------1 PCS 2. HDMI Receiver------------------------------------------------1 PCS 3.HDMI Male to Female Extension Cable--------------------2 PCS 4. USB Power Cable-----------------------------------------------2 PCS 5. User Manual------------------------------------------------------1 PCS Note: if you only buy 1 RX, it comes only the accessories of 1 RX, no TX 's No retail box and other accessories,if any need,pls contact us first