PLC with 8 points 24VDC digital input (4@50KHz 4@5KHz) 6 points Transistor PNP output (2@50KHz)/ built-in two communication ports NO expandable (1 RS-232 and 1 RS-485)/ right side is expandable up to 80 I/O points. Power Supply 100~240VAC. Standard Size 8 points 24VDC digital input (4 points 50KHz, 4 points total 5KHz), 6 points relay output or transistor output (2 points 50KHz), built-in 1-2 communication ports, left side is expandable 0-2 modules, right side is expandable up to 80 I/O points