Couplers & I/O modules: Item no. 750-304 Fieldbus Coupler INTERBUS Item no. 750-304 Fieldbus Coupler INTERBUS Please wait ... List price per piece* On request Price and availability after Your price per piece* On request PU (SPU): 1 Piece Item no. 750-304 Fieldbus Coupler INTERBUS Please wait ... List price per piece* On request Price and availability after Your price per piece* On request PU (SPU): 1 Piece