WAGO I/O System 750/753 Item no. 750-409 4-channel digital input; 24 VDC; 0.2 ms; Low-side switching Item no. 750-409 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 Item no. 750-409 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