... 8",10"12",16",18",20"24" ,32",40",48"led color : monochrome seletable color: Red, Green,White,Amber ... etcLed brightness : supper led lamp.Led view angle : 110 horizontal /40 verticalLed lifetime : 100,000 ... meters optional outdoor,support group control) , RS232 , RS485 ,GSM (message control globally),GPRS,TCPIP(we can provide group control solution ...