How do I bind my DJI Digital FPV controller to the air unit?

1. Power on the air unit and controller.
2. Use a small wooden dowel or plastic rod with a flat surface  without a sharp point, press the link button on the air unit until the status indicator turns solid red.
 
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3.  Press the record button, C button, and the right dial on the remote controller simultaneously. The
remote controller beeps continually and the status indicator blinks blue.
 
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4. Make sure the distance between the air unit and the remote controller is within 2 m. When linking
is successful, both the linking status indicators turn solid green and the remote controller stops
beeping.
 
Some of the provided information was extracted from DJI Digital FPV System User Manual v1.2 2019.11