ledsign Features: PixelPitchChoice(mm):12,16,20,22,25,or31.25 Color Displayed:Red,Amber,Blue,YellowGreen,Puregreen,orRGTri-color Communication Way:RS232,RS422,Email,Modem,RFModem,GSMModemorEthernetnetwork. OutdoorLEDsignarebrightenoughtobereadunderdirectsunlightandcanwithstandsevereloworhightemperatureanddustenvironment.Basedonamodularconstruction,theyallowforavarietyofsizes. Application: Widelyusedintrafficguiding,highwayadvertising,buildinghall,subwaystationandetc.