[Footswitch]
[Footswitch + connectors]
[Footswitch + Pedal]
[Footswitch + Foot Switch FS-7]
Nektar Pacer - USB MIDI Footswitch Controller with Nektar DAW Integration
See below
Nektar Expression Pedal (NX-P)
The Nektar NX-P expression pedal is solid, rugged and ideal for both studio and stage. Rubber gripping keeps it in place during performances and polarity switching ensures it works with almost any keyboard or electronic product requiring an expression pedal control, such as keyboards or other controllers E. G. Nektar pacer.