OMRON K31-C2 Description Description OMRON OUTPUT CARD, FRONT K3N-C / R / P / S / X / H / V, STACKABLE, RELAY OUT, 4 X IS NO, + 1XCO, CONNECTION SCREW Related products OMRON GRT1-ID4 OMRON CJ1W-OC211 OMRON GRT1-OD4 OMRON C1000H-CPU01-EV1 OMRON C200H-OD212 OMRON C200H-OC225