So I want to check it a presence sensor arrives(a or b sensor), and if presence sensor is away (a or b)
(So one presence sensor must arrive and one sensor still needs to be away)
then if presence sensor (a) is present then do this, else if presence sensor (b) is present then do this, else do nothing.
(I want to have an announcement speak to who ever comes home first, as long as everyone else is gone.)
How can I do this. Need a walk through.
