OK, thanks.At least I got the ...do I need just one, or two HS210's question answered. I am certainly familiar with switching diagrams, thanks (though these particular ones are the best I've seen). I...

@Bethel.8009 OK, I have the same question....or similar anyway. It is not clear to me from any of the literature or postings here how many HS210's I need to control a simple 4-way circuit. Actually...