Most digital piano sustain pedals are 2-dimensional, on or off. When used with a compatible keyboard, FC3 is 3-dimensional, offering full-damper sustain, half-damper sustain, and everything in between. FC3 simulates the precise response of an acoustic piano's sustain pedal, which translates into realistic control, increased musicality, and overall enjoyable performance experience. Recommended for S90ES, P60, P70, P120, P140, P200, P250, CME Pro UF Series.