I have a Ketron FS13 foot controller suitable I think for most Ketron Keyboards... Problem is I don't have a Ketron keyboard. I used to have an SD1 (hence the pedals) and I have been looking for a reasonably priced Ketron SD5 HD for a while now here in the UK with no luck.
Budget does not allow purchase of a new one so I have given up and am selling the FS 13 for £60 + postage or collect in person (current UK price new £130 best deal found)

The pedals in case anyone does not know control dozens of function on the keyboard to keep your hands free for playing.

Cheers.... John.