... radio frequency interference; Product DescriptionWe maufacture high quality LED modules that used in channel letters, shop fascias ... 8. CE, RoHS, CCC,UL approved Specifications: LED type: SMD LED ModuleAvailable colors: White, Red, Yellow, Green, Blue ... signbox backlighting 6. Advertisement billboards backlighting 7. Digital LED colorful characters, spurts draws, channel letters, blister words ...