Spec.(PDF) Chinese Download Spec.(PDF) Korean R7K4DH-1-DAC32A: HI-SPEED LINK SYSTEM I/O MODULE (PNP discrete input & NPN transistor output, 16 points each, e-CON connector, HLS use) R7K4DH-1-DAC32B: HI-SPEED LINK SYSTEM I/O MODULE ... Make Greener automation.