Please pair the new HDMI transmitter with receiver at the first using time:
First, long press the receivers middle button, until it shows " release the button"
Second, long press the transmitters middle button, until itshows " Pairing"
Third, wait 5s, it will show " Paired is OK", then it will auto stream video.
One receiver can be paired with up to 8 transmitters. The connection way is the same.
One click the first TX' s middle button, then it will be back to the blue interface. Then one click the second TX' s middle button. It will display the second TX' s content.