... ≥120° Slow light weakening (10% /3 year)VoltageDC12V (DC9V---15V safe use for solar system)Protection grade: ... Light, Landscape light,Flood light,Parking site,Garden light, Bus Station light,Sport Ares light, Wall lamp, Garding light, Building light,Tree light, Tunnel light etc. Solar ... . Radiation Aluminum as the case material, supper light increase the radiation also3. Special casing structure, ...