To clarify the description, the other reviewer is correct in that this light does not have motion detection. I didn't WANT motion detection, so I am grateful the other reviewer mentioned that.
I purchased two of these lights. One for the entrance to my separate garage, and one for the side entrance to my home, which is our primary-use entrance.
Installation is simple. All mounting brackets and hardware is included, and all you need is a phillips-head screwdriver (preferably electric) for most locations. The lighting unit includes the battery, and is still very light, so you shouldn't need to use the included anchors unless you are going into something flimsy like drywall. I like the fact that after installation, all you do is press the "on" and "brightness" buttons and you are done. The lights come on at dark, and run until the batteries are depleted.
The light has two brightness settings, which is perfect for my application; I set the garage for "low-beam" so it will stay illuminated about ten hours during the night, and I set the house entrance for "high-beam" to provide a lot of a illumination for about five hours. Since I am always home before midnight, this is an ideal setting.
The color of the light is white with just a hint of blue-green cast, like the old style flourescent lights. It's still a good quality and quantity of light, so no complaints there. It illuminates my door, the steps leading up to it, and the surrounding walkway. PLENTY of light for getting the key into the locks.
I consider at under $50 each, this product filled a huge illumination need. I am very happy with my purchase.