Model Number: SF-SG-20W-1 Brand Name: SolarFirst. Key Specifications/Special Features: Power: 20W (more than 16% of the photoelectric conversion rate)Property: imports of monocrystalline, more than 20 years of lifespanBattery capacity: 12V DC/24AhProperty: fully-sealed and maintenance-free lead-acid battery, depth of discharge: 80%Controller property: 12V DC/5AController specially designed for solar street lampsFunctions: protection against over-charge and over-discharge, light control and time controlLight source power: 4 x 2W super bright LED (or halogen lamps, electrode less lamp, high-efficiency energy-saving lamps)Color temperature: 4,500-6,000KHeight: 2.8-3.5mThickness: 2.5-2.8mmProperty: cast aluminum and hot-galvanization spraying-plastic
Working time: fully charged lamps may work 6-10 hours a day (adjustable) and last 3-5 days on-end in cloudy or rainy weather
Applicable temperature: -40-50°C
Wind-proof capacity: ≥150FM/hour