Not sure the details on the Harmony, but Todd's suggestion was a good one, though I'm actually using the ultra-budget Lutron Maestro switch, which includes an IR remote. I control it with my NEEO remote. It allows for Dimming, Full On, Full Off and you can (very easily) set a preferred dim setting for one-click access. It was like $40. No noise, no flickering in my system. I use the NEEO app to fire up the theater before I go downstairs, so the lights are on, projector is warmed up and input is selected before I even get down there. The Lutron Maestro was probably one of my best purchases in the entire room, since my light switch is next to the entrance, which is on the opposite end of the room from the seating.