OMRON 3G2C4-SI021 Description Description OMRON PLC EXPANSION UNIT, Related products OMRON 3G3FV-A4015-CE OMRON C500-OC224 OMRON C200HW-PD024 OMRON C200H-OC225 OMRON C1000H-CPU01-EV1 OMRON CJ1W-OC211
