The Yamaha FC4 Piano Style Sustain Pedal is designed to perform like an acoustic piano's sustain pedal, the FC4 has become a necessity for all keyboards. Its solid construction and 6' cable will ensure that its quality lasts a lifetime. The FC4 can also be utilized as an FS controller for synthesizers, tone modules and drum machines.
Reviewed by 2 customers
When plugged-in, and not pushing down on the pedal, sustain is active. It would be much better for sustain to operate only when pedal is pushed down.
There does not seem to be a switch selecting between "normally OPEN" and "normally closed" so you cannot tell ahead of time which keyboards it would be compatible with. Most pedals give you a choice. No directions come with it. It is NOT as simple as one would assume. I may have to return it to the store.