Yes indeed, the HT-200 is like a spotlight. If it is in a space where it is dark, you simply have to imagine that one illuminates a flashlight, allowing for a clear source of light. Imagine 2, 3 or 4 units and you will understand that together they will illuminate all surfaces after being reflected. Walls, ceilings, floors, roofs, etc. will be illuminated. As a result, dark spaces are seen more clearly.