Nope. IIRC, for H&K you need a latching switch (not a momentary). There are some affordable options from Hosa and others, just make sure to buy the cable if needed. You also can get the actual H&K FS2 for $55 on Amazon, it has a ~15' cable permanently attached.

Footswitches are not one size fits all, even if they have the right number of switches and the correct plug, some amps, like modern Fender, have complex proprietary switching circuits.