A quick look at the manual tells me it can be controlled by CC commands, MCU devices or OSC.
They specifically mention Lemur and TouchOSC, so this should be no problem.
A quick search reveals this:
https://www.forum.rme-audio.de/viewtopic.php?id=20131 (Touch OSC)
https://www.forum.rme-audio.de/viewtopic.php?id=16434 (Touch OSC)
https://www.forum.rme-audio.de/viewtopic.php?id=17445 (Lemur)