This timer has a photoelectric eye senses the absence of daylight and automatically turns your lights on at dusk and then off after a set amount of hours, or at dawn according to the schedule you manually set. The light sensor timer settings repeat daily, turns lights on at dusk off at dawn or on at dusk and off after 1 to 9 hours later. Program this timer to turn your security lights, patio or seasonal decorations on at a set schedule every day..
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