If lights are turning on in the middle of the night for no reason, it might be something besides UPB doing that. UPB is really solid from a reliability end, but noise on the line still can cause problems.
So is it the same light that is causing problems or multiple lights? What UPB switch model do you have? Is the controlled bulb(s) incandescent, CFL, or LED?
So is it the same light that is causing problems or multiple lights? What UPB switch model do you have? Is the controlled bulb(s) incandescent, CFL, or LED?