I ragequitted working on the Wiki, so here goes; Switch is powered on with a SPRK from PSCN, and powered off with a SPRK from NSCN. When on, it conducts SPRK, when off it does not. WIRE can take SPRK from PSCN and give to NSCN. It's an entire different concept from WireWorld, much like GOL. Other explanations for elements can be found on This Wiki page