... .High power efficiency 3.electric yaw system 4.off-grid and on-grid system 5.CE certificate 50w led wind solar ... &solar powered streetlight characteristic:1,Comply with nationalLighting Design Standard> (CJJ45-91) I11uminate Request.2,Configuration reasonable ... ,over current,under voltage protection.8,Low power:whole system using industrical devices,adopting high temperature,cold,wet and ...