I don’t think you can do it with a 10 second delay, but you could definitely do it with a one minute delay. I don’t know if that would meet your requirements or not. But someone asked a very similar question just a few days ago, so here’s the post:
I’m not sure why this isn’t working within harmony itself, there are many different ways that devices can be configured.
But you could certainly set up a daisy chain sequence within SmartThings that would solve this for you.
You would need two separate activities, one that only turns on the power plug and then one that does everything with your actual home theater equipment, but that doesn’t itself turn on the power plug .
Then you would also need a virtual switch.
Now you’re going to set up a daisy chain sequence that looks like this:
push a button on the remote that starts a harmony activity that does nothing except turn on the virtual switch. You will set up the virtual switch as a virtual timer which will turn itself off again in one minute.
Two) set up a SmartThings sequence s…