FZONE KEYBOARD SUSTAIN PEDAL

The FZone SP-1 generic digital piano pedal is fitted with a switch on the side of the unit which reverses the polarity making it compatible with multiple brands. The FZone SP-1 pedal can be used as a soft damper, sustain, or sostenuto pedal depending on the capabilities of the keyboard.

https://www.oosthavens.co.za/product-category/keys/keys-stands-accessories/