You don't show the Conditions on your Edit Actions screen. Can you go into edit actions and look at the conditions your have listed there?
Also, is this a rule copy?
I know you said you never selected it, but this is almost certainly the result of the device having been selected at some point in the past (maybe you accidentally chose it once somewhere instead of "Mancave spot 4" then changed it?) or one action getting modified to a different action some point in your rule editing. It should be harmless, just possibly annoying; in that case, re-creating the rule should get rid of it.