What lands in the panel
The Omron CP2E-S30DR-A is a CP2E series I/O module sized for compact machines — 18 digital inputs and 12 relay outputs on a single DIN-rail block, with a 100–240VAC supply range so it drops onto a standard industrial mains feed without a separate 24V PSU. Wiring lands on screw terminals at the base, and the block is rated to operate from -20 °C to 60 °C — covers most unenclosed cabinet and shop-floor locations without an enclosure heater. The I/O count and the relay output type make it a fit for mixed-signal panels: digital sensors on the input side, contactors, solenoid valves, indicator lamps, or low-current motor starters on the output side.
Where the class earns its keep
CP2E-class modules sit on small-format PLC racks — typically paired with a CP2E CPU — handling the discrete marshalling for packaging lines, conveyor sections, HVAC zoning, and stand-alone machine tools where a full CJ/NJ rack would be overspec.
What to weigh against the seed
The CP2E-E30DR-A is the closer functional match — same 100–240VAC feed, same 18 digital in / 12 relay out, same temperature and terminal profile. Different Ethernet-class CPU family, so confirm the host CPU before treating it as a like-for-like sub.