1. video and audio transmission via built-in wireless transmission protocol,no need wifi or internet 2. Support regular HD video resolution 1920x1080 60Hz 3. The transfer is efficiency to that the playback fluency 4. Built-in automatic balance system, the picture is fluent, clear and stable 5. The built-in ESD electrostatic protection circuit, comprehensive security protection system Simple and convenient installation, we have paired,you plug and play, do not need to set up. Introduction: Our product is new chip and upgraded version, more stable. new and high quality,buy with confidence! TX=Transmitter RX=Receiver This extender built-in wireless transmission protocol,it can wireless transmit HD audio 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 signal extension. It is widely used for Big screen video Conference or home entertainment or online learning or business speech or education training or playing game etc. more shocking,more relax, and is better for protecting eyes. Reminder: Please use it in accessible open spaces as much as possible. When encountering walls or obstacles, the transmission distance of the device be shortened. Colour:Black Material:ABS Package Contents: 1 x RX receiver 1 x TX transmitter 2 x power cords 1 x English manual 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.