Outdoor Wall Plate Eye Control With Photocell, Controls Security Lighting, Entry Way Lighting & Other Outdoor Fixtures, Arrive To A Safe Home Or Building, Turns Light On At Dusk & Off At Dawn, Replacement Photocell For Post Lamps & Pole Lanterns, Fits Standard Outlet Box, Works With Incandescent, Fluorescent, CFL, LED, Halogen, Mercury Vapor Or High Pressure Sodium Bulbs, Equipped With 3/8" NPT Pipe Thread, Weatherproof Wall Plate With Neoprene Gasket, Nut & Washer Gasket, Requires No Seasonal Adjustments, Photo Control Activates With The Absence Of Light, Time Delay Eliminates Flicker & False On/Off Triggers Due To Stray Car Light.