high power led street lamp Material:aluminum alloy, plastic with high temperature resistance and high reflection effects. Light color:4000 5500k(white), 2700 3500k(warm white) Technical specification: 1.Using aluminum alloy, plastic with high temperature resistance and high reflection effects. 2.The size and power can be set according to customers’ requests. 3.Under the theory of concentric circles, the angle of refraction can be up to 120 140 degree, with strong visibility. 4.Using LED as light source and packaged by epoxy resin, without the problem of filament heating. 5.With rated voltage and constant current power supply, it can ensure that the LED bulb works for longer and low attenuation. 6.High brightness LED light source, the color of light is without spot, it can achieve lighting effects. Power factor >0.95 Power efficiency >88% Total harmonic distortion <15% System power 28W LED luminous efficiency >90lm/w LED lamps initial luminous fux >9900 Lm Luminaire light efficiency >90% Correlated color temperature 4000k 5500k Color factor Ra>75 Junction temperature <75° .Working environment Temperature -40° 50° relative humidity 10% 95% Protection class IP65 Life >50,000 hours