Single push buttons to cognitive test using SuperLab?

We perform cognitive tests where participants must respond to visual and auditory stimuli by pressing single push buttons (one in each hand). We perform our cognitive tests on SuperLab, which is connected to the PowerLab and Labchart via the Stimtracker and m-pod. We know that there are analog signal push buttons for the PowerLab (Push Button Switches | ADInstruments). We are looking for the same push buttons but ideally compatible with SuperLab (connectable to the Stimtracker). Does anyone know if such single push buttons exist for SuperLab. If not, does anyone have a suggestions?

Thank you.

For the benefit of other forum visitors, this is done using an external circuit board that plugs into StimTracker Quad.