M-Audio Oxygen Pro Mini – 32 Key USB MIDI Keyboard Controller With Beat Pads, MIDI assignable Knobs & Yamaha FC5 Compact Sustain Pedal for Portable Keyboards, black - Yahoo Shopping
HFSECURITY USB Double Foot Switch Pedal Control Keyboard Mouse Plastic Nonslip Metal Momentary Electric Power Foot Pedal Switch - AliExpress
Amazon.com: M-Audio SP-2 - Universal Sustain Pedal with Piano Style Action For MIDI Keyboards, Digital Pianos & More : Musical Instruments
Infinity IND-USB Double Foot Control USB Transcription Foot Pedal
Amazon.com: penypeal Compact Sustain Pedal for Portable Keyboards,All Metal Heavy Design with Polarity Switch, for Portable Keyboards Digital Pianos Drum Machines : Musical Instruments
Novation FLkey Mini 25-Key MIDI Keyboard Controller for FL Studio with FL Studio 20 Producer Edition (Boxed), Keyboard Piano Style Sustain Pedal (Black) and 4-Port USB 3.0 Hub Bundle | Reverb
Portable 61 Keys Flexible Roll-Up Piano USB MIDI Electronic Keyboard Hand Roll Piano Sustain Damper Pedal Page Turner Pedal NEW - AliExpress
Using the iOS app
USB Transcription Foot Pedal | Dictation Foot Pedal
StudioLogic VFP1/10 Piano Style Sustain Pedal VFP-1-10 B&H Photo
Amazon.com: USB Foot Pedal, USB Single Foot Switch Game Control, One Key Customized Computer Keyboard, Plug & Play Singal On Off Switch : Musical Instruments