The top part of your Camera is a floodlight. It uses low energy LED. Its 12W are the equivalent to a 120W halogen floodlight, and the light intensity can be adjusted to your needs. According to your preferences, it will turn on when detecting certain events. For example, you can set it to turn automatically on only when the Camera detects people or cars, and keep it off for the rest of the time, even if it detects any other motion such as an animal.