“MIDI Platters
The Serato DJ virtual decks are not user assignable to MIDI control. MIDI devices with platters on them all send different data so user mapping is not possible. To control the platter use a natively supported Serato DJ controller”
It also doesn’t help that they aren’t official Serato accessories/controllers. You might be able to trick Serato into thinking they are by having a Serato tone plugged into the MM1 but my gut tells me this won’t work. They look like they were aimed at the Traktor/VDJ crowd as those programs will let you midi map whatever you need and Serato doesn’t let you midi map the jog wheels.
.