It can't be used with anything but the mini revo it goes with. Not with a real revo or cc3d.
You'd have to contact the Chinese designers, it's a closed source device having nothing to do with the project. It's essentially an antenna connector, rfm22b radio module, and voltage regulator.
If you're a good programmer it's possible you could hook it's SPI port to some other FC and modify that FC's firmware to use the oplink air but it would be a lot of work.