It is equivalent to a standard HID USB keyboard and mouse, but it is customizable by using the setting software, which can define your foot switch as any keys, key combinations or mouse, No other software is required.
eBay
Miwayer Sustain Pedal with Polarity Switch for MIDI Keyboard Synth Digital Pianos Electronic Drum
Aliexpress UK
Designed to work and feel just like an acoustic piano's sustain pedal. Universal Piano-style Sustain Foot Pedal with Polarity Switch Design Compatible with Any Electronic Keyboard with 1/4 Input Jack.
eBay
Donner STARRYKEY MIDI Keyboard Controller, 25 Keys, 7-Color Lighting, Backlit Pads, MIDI Out & Pedal
Aliexpress UK
【Enrich Tone】: Works and feels of the Piano Foot Pedal like an acoustic piano sustain pedal, enriching your piano tone. 【Portable】: Piano sustain pedal, light and compact, with moderate pedal height, suitable for pedaling efforts of all ages.
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Donner STARRYKEY MIDI Keyboard Controller, 25 Keys, 7-Color Lighting, Backlit Pads, MIDI Out & Pedal
Aliexpress UK
Black Keyboard foot pedal with jack input in excellent condition and perfect working order
eBay
Triple sustain Pedal Damper for Digital Piano Electronic Keyboard Yamaha P48 P115 P125 P128 P223
Aliexpress UK
2PCS Universal Piano-style Sustain Foot Pedal with Polarity Switch Design Compatible with Any Electronic Keyboard with 1/4 Input Jack. Designed to work and feel just like an acoustic piano's sustain pedal.
eBay
Piano Sustain Damper Pedal Keyboard Universal Roland Electronic Piano Electronic Keyboard Pedal
Aliexpress UK
1 Sustain Pedal. 【Stable Non Slip Design】: The pedal is non slip that provide stability on various surfaces. 【Versatile Polarity Switch】: Equipped with a convenient polarity switch, this pedal allows you to easily toggle between different settings to suit your specific needs, making it compatible a wide range of electronic pianos and keyboards.
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6.35 Mm Interface Compact Sustain Pedal Universal Single Pedal for Electric Piano Keyboard
Aliexpress UK
Designed to work and feel just like an acoustic piano's sustain pedal. 1 Sustain Foot Pedal. This high-quality pedal features a polarity switch making it compatible with virtually any keyboard. Anti-slip design.
eBay
Sustain Pedal with Polarity Switch for MIDI Keyboard Synth Digital Pianos Electric Piano Drum
Aliexpress UK
Designed to work and feel just like an acoustic piano's sustain pedal. Universal Piano-style Sustain Foot Pedal with Polarity Switch Design Compatible with Any Electronic Keyboard with 1/4 Input Jack.
eBay
Sustain Pedal with Polarity Switch for MIDI Keyboard Synth Digital Pianos Electric Piano Drum
Aliexpress UK