The light turns off after about 10 seconds of walking away or closing the door. The photo i posted is to show how bright it is when the rest of the house lights are off. The video shows how fast the motion sensor works. Did not experience problem of what others said of this not working when nearby lights are on. Mine turns on with no problem even when my home is entirely lit.
I would also suggest putting on the ceiling of a closet instead of a wall because it can get too bright for the eyes when directly looking at the light.
Lastly, be careful of the unpeel of the sticker. It is a very thin layer. I accudentally peeled the whole tape off the light on my 1st attempt of the 3 pack. But still ended up sticking back.