... voltage: DC12V/24VLighting sources: 18W~150W low-pressure sodium lamps, high-pressure sodium lamps, energy-saving lamps, large-power LED, etc ... : -30°c----55°c. Solar panel: mono/multi-crystal silicon high-efficiency cell with service life ≥25 yearsStorage battery: valve-controlled ... subject to the local natural resources and customers specific requirements. High-pole Lamps