WAGO I/O System 750/753 Item no. 750-663/000-003 Intrinsically safe 4-channel digital input; 24 VDC; PROFIsafe V2.0 iPar Item no. 750-663/000-003 Intrinsically safe 4-channel digital input Downloads as zip Download Compare Configure Item no. 750-663/000-003 Intrinsically safe 4-channel digital input Downloads as zip Download Compare Configure