Here’s the bottom line  they DO NOT WORK AS ADVERTISED. They are supposed to be dusk to dawn. They go around dusk and remain on for about 4 hours at most. They are placed in direct strong sunlight (South Florida)  for many hours a day. They are just an inferior product. As inexpensive as they may seem, you get what you pay for. And they are also bulky and unattractive. Look for another product. You’ll thank me.