Since I've been looking for a solution to mount a lighting in the garden shed, because I have no power there. As I came across the article. Was skeptical at first because of the light output but after inserting the batteries (the were not there I find a shame since it takes 5xAA batteries that not everyone are just at home and I would therefore also give the star trigger, but when the price is okay. In Obi I pay for so ne bar scarce 45) I was really excited. The sensor works great. So as it should be. Man enters the room and it lights up. After leaving the room, it takes about 30 seconds and the light is off. So that the batteries are charged not so bad. One can either glue or screw on the cover at the back at the ceiling. Screws are included. Have previously a battery-powered LED (SMD) radiator used with 2x 3.7V used. The was also very good but the downside was that the batteries were empty soon. I've now ne 2nd ordered for my closet.