There's also a pedal polarity switch inside the Tyros...press Direct Access followed by stepping on the pedal.
Looks like a nice compact pedal.
You say it was inexpensive...how much was it?
Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.