RYG FULL BALL TRAFFIC LIGHT WITH FRESNEL OPTICAL LENS RYG Full Ball Traffic Light With Fresnel Optical Lens Characteristics: With Fresnel optical lens to change the angle and focus the lights to increase the brightness.High light transmittance, the light are accorded to chroma standard, the products can work well even one led is broken.Super high brightness LED, Powered by constant voltage or current to reduce LED degradation.Been tested and approved by Traffic Products Test Center of the Ministry to Public Security, and be accorded with GB14887-2011.With CE, TUV, EN12368 certification.Double sealed.IP grade: IP55.