From the first moment, it presented a problem. As soon as I put in the batteries, it started turning on and off periodically, as if it were Christmas lights. Then it works sporadically, regardless of movement, lighting, etc. I do not recommend it, based on my experience.

Indeed, it is a heavy construction. However, if you stick it upside down, it won't hold. It needs to be stuck on a vertical wall.
The light is very good for a double-door wardrobe.