For indoor use. The light can be: 1. The whole surface is illuminated; 2. The front is illuminated; 3. The front and the back are illuminated; 4. The side is illuminated.
For indoor use. The light can be: 1. The whole surface is illuminated; 2. The front is illuminated; 3. The front and the back are illuminated; 4. The side is illuminated.