Couplers & I/O modules: Item no. 750-667/000-003 Fail-safe 4/4 channel digital input/output; 24 VDC; 2 A; PROFIsafe V2.0 iPar1 of 4Color: Item no. 750-667/000-003 Fail-safe 4/4 channel digital input/outputDiscontinuedPlease wait ...Downloads as zipCompareAdd to WatchlistFind distributorsConfigureThis item has been discontinued. Item no. 750-667/000-003 Fail-safe 4/4 channel digital input/outputDiscontinuedPlease wait ...Downloads as zipCompareAdd to WatchlistFind distributorsConfigure