I'm also very curious about this. Let me know if the 12/24 volt idea works. I locked myself out once. And my 4 year old, locked in, saved the day. I parked the coach, cut the 12V and 24V off for an extended parking, went back into the coach, closed the door, hit the air lock, and went to sleep. Next morning, I woke up, decided that I wanted to move the coach, opened the door (no I didn't disengage the air lock, so it never locked), went outside to turn 12V and 24V back on, did so, went back to the front door and it was locked. Rang the bell until I saw my 4 year old's little eyes peering out the window. She followed instructions very well. Got back in.

That could happen to anybody!

~Adam