I bought this to use the sustain function on my Roland E-15 keyboard. The pedal works for this job and is compatible with this device.
The pedal is well made (as exoected with Roland/Boss products), however the plastic casing feels somewhat cheap.
The pedal is also relatively small (around half the size of a boss guitar pedal) and lighter than I would like for a foot pedal.
The cable is hard-wired in also, making this harder to replace should it break in future.
Overall it’s a good product for the price, but I’d have preferred something more similar to the DP-10 were this compatible with my keyboard.