Compared to I-7188EX, the I-7188EA adds seven open-collector output channels and six digital Input channels. I/O Expansion bus has been occupied by DI/O expansion board. Therefore I-7188EA is used as an Embedded Internet / Ethernet Controller with several built-in D I/O channels. If the user want to know more detail of I-7188EX, refer to I-7188EX for further information.