1. Light,Small and ultra-mini appearance,easy to use, easy to carry, very convenient; HDMI video and audio transmission via built-in wireless transmission protocol,no need wifi or internet. 2. Plug and play, not need to install any driver and Apps. 3. 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. 4. Support mirror and extended modes. Support one to one mode and many to one mode ( up to 8 TXs to 1 RX). Configured with LED small screen,real-time display,see the connection status at any time. 5. Transmission Distance: outdoors open space can reach 50M,indoor without any barriers around 30M(Pls noted that this model does not support through the wall) Product Name:Wireless Display Adapter Resolution:1080P Power Supply:5V/2A Band:5.8G 8TX to 1RX Pairing Method: According to the one-to-one pairing method,the first transmitter will be pairedwith the receiver, after successful pairing, the second transmitter will be paired one-to"one with the receiver, and so on will be the third, fourth, fifth,sixth,seventh and eighth transmitters respectively with thesame receiver, When each transmitter is successfully paired with the same receiver, the pairing is completed and the power can be turned on. (Remarks: Multi-pair support up to eight transmittersto one receiver) Usage Method: Multiple transmitters to one receiver support up to 8 to 1,whenswitching, you need to press the pair key of the transmitter, for example:currentdisplay of the No. 1 transmitter, if you want to display the No.2 transmitter,at this time,press the pair key on the No.1 transmitter (the display screen showsthe pairing tickscreen), then press the pair key on the No.2 transmitter to switchto the screen of the No.2 unit, and so on. Note: Each transmitter can be displayed arbitrarily. Note:Due to different factory batches, slight differences in appearance will not affect the use. Colour:Black Material:Plastic Package Contents: 1 * Wireless Transmitter 1 * Wireless Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.