DVP-ES2 series provides 16~ 80 points PLC and 8 ~ 32 points digital I/O module. The maximum I/O points including those on the PLC are 256 points. DVP-ES2 series PLCs satisfy various applications in that they can be used with analog input/output modules. Users do not have to install any batteries in DVP-ES2 series PLCs. The PLC programs and the latched data are stored in the flash memories.