1. Transmit HDMI video and audio signals over long distances via WiFi, up to 50 meters; 2. Compatible with HDMI 1.4 and 1.3 standards; 3. Able to automatically identify and configure various display modes; 4. Built-in automatic equalization system, smooth, clear and stable picture; 5. No software, no settings, no drivers, just connect to cast screen; 6. Installation steps Receiver + transmitter combination, plug and play 1. Connect the HD port of the receiver to the video input port of display devices such as monitors or TVs. 2. Connect the USB-C power port of the receiver to the charging cable and plug it into the power adapter or USB power port (voltage 5V current 2A). 3. Adjust the HD signal source of the monitor or TV to the corresponding HD port until the receiver boot screen is displayed and the boot is successful. 4. Connect the transmitter to a computer or other device with HDMI video output function. Wait for more than ten seconds after the indicator light enters the flashing state, The projection is completed. Pairing instructions The product has been paired at the factory. If the pairing fails due to improper operation or other circumstances during use, the device needs to be restored. The steps for re-pairing are as follows: 1. Please press and hold the receiver function key for more than 5 seconds, and the interface pops up a prompt: "Pairing Timeout: 90S", and wait for the transmitter to enter the pairing mode. 2. Press and hold the transmitter function key for more than 5 seconds, and the indicator light flashes quickly for pairing. Wait for the transmitter indicator light to be on to indicate a successful connection Colour:Black Material:ABS Package Contents: 1 * Receiver 1 * Transmitter 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.