The present application relates to an energy saving system, and particularly to a method and {HEAD ~ apparatus} for saving {TAIL ~ energy} used by street or area lights 
for saving
The present application relates to an energy saving system , and particularly to a method and { HEAD ~ apparatus } for saving { TAIL ~ energy } used by street or area lights
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH