The lamp I bought me to a dark corner in a hallway and battery powered to illuminate something automatically. I have it installed in about 1.80 m height under the ceiling. The mounting is very easy as the battery cover is already equipped with a double-sided tape. Alternatively, the lamp but also attach with screws (not included). Incidentally, the opening of the battery cover is in an excellent way. This fact keeps the lamp housing by two magnets. Attach battery cover, put on luminaire housing, finished! So a battery replacement is ensured even without the hassle of fumbling. Batteries are not supplied by the way. I use three Eneloop batteries (AAA). Let's see how long they keep. The illumination is sufficient, of course, no floodlights. But for my purposes enough. Light sensor and motion work as they should. I am happy.