... .with CE and UL or ROHS certification.different pixel Led outdoor Full Color DisplayFeathersSpecifications: 1) Pixel pitch: 6mm (0.236''), 8mm ... , 20mm, 22mm, 24mm, 25mm,31.25mm, 32mm,33.33mm, etc. (Outdoor)2) Colors capability: 16, 777, 216 colors (256 gray scale ... ) Wave length (typical): R: 625nm; PG: 525nm; PB: 470nm Led Outdoor Full color display