Couplers & I/O modules: Item no. 750-422 4-channel digital input; 24 VDC; Pulse extension Item no. 750-422 4-channel digital input Please wait ... List price per piece* On request Price and availability after Your price per piece* On request PU (SPU): 1 Piece Generate Datasheet Download Downloads as zip Download Compare {{ label }} Find distributors Configure Item no. 750-422 4-channel digital input Please wait ... List price per piece* On request Price and availability after Your price per piece* On request PU (SPU): 1 Piece Generate Datasheet Download Downloads as zip Download Compare {{ label }} Find distributors Configure