The Woods 2001 Outdoor Photoelectric 24-Hour Mechanical Timer turns on your yard lights or outdoor holiday decorations on a set schedule every day. The photoelectric eye senses the absence of daylight and automatically turns on your lights – and then off a set amount of hours later or at dawn according to the schedule you set. This is a simple way to save some money on energy costs since your yard will only be lit up when it is dark. The timer has a rugged, weatherproof housing and a 6″ 18 gauge cord.