Roland SPD-SX PRO Sampling Pad with 32GB Internal Memory - Manual (Page 34)

Playing
34
Playing While Using the External Pads or Footswitch (TRIGGER IN/FOOT SW)
You can assign the waves to an external pad (PD series, sold separately), to an acoustic drum trigger (RT series, sold separately) or
to a footswitch (FS-5U/FS-6/FS-7, sold separately).
Some typical connection examples are shown below.
Connecting an external pad or acoustic drum trigger
Connecting two external pads to a single TRIGGER IN jack