"Energy conservation must start from 'lighting on demand', especially in the public construction sectors, such as underground garage, corridors, and stairwells. There is a big difference between effective lighting time and actual lighting time in these sectors, with radar microwave technique, the intelligent LED lights can play the dimming effect that 'to light up when people is coming and to be dim when people is away', not only can it provide lighting, but also achieves a good energy saving effect.”, Shukui Bing, vice president of China Illuminating Eng...