Light Sensor Control of LED Flood Light is Not Enough for Better Cost-saving

It's most common to apply light sensor control on the light fixture in traditional flood lights, so that it will light up when the brightness is lower than a certain degree. This can do control the on and off of lights automatically and save the cost of personnel and energy.
However in this LED era, using LED flood light is more like a trend. Because LED Lights remain the same brightness while saving 2/3 of energy costs, moreover it adds a motion sensor on the light sensor control. Since LED flood light can sense brightness change and motion of objects, it can sense moving objects when it's dark and no brightness change, then it can further saving more electricity.