Wireless WiFi HDMI Extender Audio Video Transmitter&Receiver Fit For DVD Laptop. This product supports up to 200 meters no obstruction transmission; up to 164 ft (50m) through the wall pls note that the distance, obstacles quantity, matierals, thickness etc. All will affect the using effect, If used through obstacles, the effect of use depends on the actual situation. Because it depends on many factors, if possible, we advise you use it in an open space.The transmitter supports an HDMI local Loop-out to make it easier to monitor the video source. Compatible with a variety of HDMI devices 4. Adopt international 2.4Ghz/5Ghz dual-frequency wireless transmission signal, fast transmission speed and strong anti-interference ability. As to the IR function, only works under one-to-one mode 2. Pls note : Tx and RX need paired use, TX and RX can not be used alone. We will make every effort to make your shopping the most pleasant and wonderful! This item is in the category "Consumer Electronics\TV, Video & Home Audio\TV, Video & Audio Accessories\TV & Video Accessories\Video Cables & Interconnects". The seller is "uniquegoods_4sell" and is located in this country: CN. This item can be shipped worldwide.