For M4S Remote:
1. Make sure the remote and the board have power.
2. Turn on the board and the remote.
3. Hold the POWER button on the board for about 5 seconds until the power light is blinking.
4. Hold the "FUNCTION(M4)" or "Reverse(other remotes)" and "POWER" button of remote at the same time for about 3 seconds.
5. The screen of remote will show "Pairing" and then the remote is paired with the board automatically Here is also a video instruction for you:
https://www.youtube.com/watch?v=XOrH-2aWt9c&t=80s
