Posted by a reviewer on Amazon

Tested it indoor with window blinds open and closed

Posted by a reviewer on Amazon

I wanted to see if it really can sense the light outside and automatically shut itself off

Posted by a reviewer on Amazon

Install it just like a regular bulk and then on the switch then the bulb lights

Posted by a reviewer on Amazon

Sensor works great even under eaves took away one star only for brightness of light sorry my caps button is stuck

Posted by a reviewer on Amazon

An electrician installed a dusk to dawn lights in between my garage and back door but it seems like there was a problem with it

Posted by a reviewer on Amazon

It works great more light and never fail to turn on as it was supposed to do

Posted by a reviewer on Amazon

I have a very deep light socket so all the other sensors andor lights with sensors were blocked due to the deep socket

Posted by a reviewer on Amazon

In the past i tried a separate light activated switch that screwed in between the bulb and the fixture but because of the limited daylight it never turned off