There is no wah signal until the wah pedal is moved. You do not need to toe down on a button or anything.
The spring pushes it back to zero when you take your foot off of it. My Morley Liberty Wah works that way also.
It is just step & go. Spring makes the rocker action lighter/heavier.
Weeping Demon was a helluva wah.
so you cant do the cocked wah thing unless your foot stays on the pedal?