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