Abstract: A dusk delay system for outdoor motion detection provides the benefits of dusk to dawn, timed, and motion detection control. A dusk to dawn type sensor detects the onset of darkness and turns on the lights for a predetermined duration of time. Once the duration of time expires, the lights will be shut off. Subsequently, motion within the monitored area will be detected by a motion detector and cause the light to be turned on for a selectably predetermined amount of time. The timer can randomize the actual time in which the lighting controller shuts off the light and goes into the motion detection mode. A latch mechanism disables the operation of the system upon momentary interruption of the power.