Switches are fun to figure out. I agree with the others. It's for the amber light in the steps. There are other interesting finds. Switch on the left side of the cabinet above the tv in the living room (controls the ceiling lights in front of the cabinet). Most living room lights are in the control panel (but not all). If you ever turn on every light in the living room it's like a quest. Outlets on both side of the bed frame are not obvious (I knew there had to be more than the one in the dresser). I'm guessing you found the awning LED switch in the control panel (wasn't marked on mine). Good luck with your new 3070RE and let us know if you have any questions!
Scott