This device is beginning to look like a hassle. It looks like you need to have the keyboard's midi out plugged into the controller's midi in plus the controller's midi out plugged into the keyboard's midi in plus a footswitch plugged into the controller. Too many wires. I found someone in Ireland who sells kits to build a midi sustain pedal. I'm negotiating with him about him building me one. It runs on a 9 volt battery.

Beakybird