Nektar NP-2 Universal Sustain Pedal (Switchable Support all keyboard)

Nektar NP-2 Universal Sustain Pedal Features at a Glance:
Solid, rugged piano-style sustain pedal
Polarity switch ensures compatibility with most any keyboard or digital piano
A 6′ cable with 1/4″ TS jack lets you to place your pedal where you want it
Rubber gripping holds the pedal in place

Polarity: Switchable