... off-grid and on-grid system 5.CE certificate wind energy street light Effsun wind &solar powered streetlight characteristic:1,Comply ... 3,Reliable and durability:under no wind and solar conditions can keep lighting 4days,above 10 hours per day.4, ... charge control.10,Large powered Led Lamp can be divided to timely control power,Illuminate,energy saving and environmentalprotection.11,Installation,operation ...