option board (Slot B), not compatible with K3N models, Linear DC(0)1-5V or 0 to 10V Output and 12 VDC 80mA sensor power supply option board (Slot B), not compatible...
option board (Slot C), not compatible with K3N models, 2 relays (High/Low) SPDT for each relay option board (Slot C), not compatible...
option board (Slot C), not compatible with K3N models, 4 relays (HH/H/L/LL) SPNO for each relay option board (Slot C), not compatible...
option board (Slot C), not compatible with K3N models, 5 NPN open collector output (HH/H/PASS/L/LL) option board (Slot C), not compatible...
option board (Slot C), not compatible with K3N models, 5 PNP open collector output (HH/H/PASS/L/LL) option board (Slot C), not compatible...