I want to use the unit with a DJ application other than rekordbox or Serato DJ Pro by assigning MIDI. Where can I find the MIDI code sent from the unit when I use each button or knob?

You can find the List of MIDI Messages [here].

 

When Serato DJ Pro/rekordbox is running, the unit works as a controller designed for the Serato DJ Pro/rekordbox features.

 You can also use the unit as a general MIDI controller.

 

 For details, check out the Instruction Manual > [Settings] > [Utility settings]>[MIDI MODE].

 You can read the Instruction Manual [here].