Couplers & I/O modules: Item no. 750-666/000-004Fail-safe 4/2 channel digital input/output; 24 VDC; 10 A; PROFIsafe1 of 5 Fail-safe 4/2 channel digital input/output; 24 VDC; 10 A; PROFIsafePlease wait ...Add to shopping cartGenerate DatasheetCompareAdd to Watchlist Fail-safe 4/2 channel digital input/output; 24 VDC; 10 A; PROFIsafePlease wait ...Add to shopping cartGenerate DatasheetCompareAdd to Watchlist