... yaw system 4.off-grid and on-grid system 5.CE certificate 50w led wind solar hybrid street light Effsun wind &solar powered streetlight characteristic:1 ... light/time control,user self-setting,convenient and utility.6,Lamp protection:open and short circuit protection,with self- ... wet and so on conditions.9,Control:with battery voltage,controller temperature,charge control.10,Large powered Led Lamp can ...