The Single Pole Single Throw Flush Mounting Lexan Housing Photo Control will automatically have your outdoor light(s) turn on when it gets dark. It is great for your Pole Lanterns, Lawn Lighting, Walkways applications. The Photocell fits all outdoor lamp posts for easy installation. It requires no daylight savings time adjustments as it responds to the light spectrum near to that of a human eye. It works with screw base CFLs and has power consumption average less than 1-Watt.