Couplers & I/O modules: Item no. 753-453 4-channel analog input; 0 … 20 mA; Single-ended Item no. 753-453 4-channel analog input Please wait ... List price per piece* On request Price and availability after Your price per piece* On request PU (SPU): 1 Piece Item no. 753-453 4-channel analog input Please wait ... List price per piece* On request Price and availability after Your price per piece* On request PU (SPU): 1 Piece