To limit the probability that a manual control to override the Scheduled Shut Off control device or system of Sentence 4.2.2.1.(19) will turn lights on for unnecessary long periods of time or for an excessively large area, which could lead to operation of lighting in unoccupied areas, which could lead to unnecessary consumption of energy for lighting, which could lead to excessive use of energy, which could lead to an unacceptable effect on the environment.