Triggered Event on "last light is off"

[Prefect]

This is probably a highly personal thing, but I wouldn't really want to have to run around to shut all the lights off to "put the house to sleep." In my view, part of the point of an automation system is to hit a single button and have the system turn all the lights off, arm your alarm, etc.

You could also tie it to arming your ELK.. When it goes into Armed Stay, have it start a sequence which shuts your lights off, etc.