The Korg DS1H professional piano style damper (Sustain)
pedal offers half-damper action when used with products that
support half-damper control.
For products that do not support half-damper message, the Korg
DS1H pedal will act like a regular, full damper pedal. Recommended
to use with Korg workstations.
High-quality damper pedal
Heavy duty construction
Allows players to vary the sustain depending on position of
pedal
Excellent quality. Feels like and acts like a piano sustain pedal. Just note that it needs negative polarity to work. We replaced a Yamaha pedal which had required positive polarity and so I needed to reset the keyboard.
Kawai GFP-3 pedal for MP7SE/MP-11SE
Yamaha FC-4 Sustain Foot Pedal 
Casio SP-34
Yamaha FC35
Roland DP-10 Damper Pedal