Height between light source and ground: 6.0-9.0mSolar battery: monocrystalline or polycrystalline solar battery components with high conversion efficiency Light source: 20-40W energy saving lamps, 18-35W low-voltage sodium lamps, 20-35W super-highly bight LED, 70W high-voltage sodium lamps,Illumination hours: 3-8hContinuous rainy days: 3-6 daysController: adopts microcomputer chips, integrated sensor, and noncontact control technique,with functions as temperature compensation, intelligent discharging, etc.Storage battery: free-maintenance full-sealed Valve-Regulated Lead Acid BatteryApplicable range: areas with more than 2200 hours of annual sunshine time.