Swing gate opener add the remote controller method？

Enter the controller menu P-13, the screen will display the number of currently saved remote controls. Press the Open, Close and Stop buttons on the remote in sequence to perform learning.

Note: Keep pressing a button until the control board beeps once, then release it. Proceed to the next button. The learning for this remote is completed when the control board emits a long beep or the number on the digital tube increments. You may continue to learn another remote, or press Cancel to exit.