Couplers & I/O modules: Item no. 750-665/000-001Fail-safe 4/4 channel digital input/output; 24 VDC; 0.5 A; PROFIsafe1 of 4Color: Item no. 750-665/000-001 Fail-safe 4/4 channel digital input/output; 24 VDC; 0.5 A; PROFIsafePlease wait ...Add to shopping listBuy via Distributor eShopGenerate DatasheetDownloads as zipCompareAdd to WatchlistFind distributorsConfigureItem no. 750-665/000-001 Fail-safe 4/4 channel digital input/output; 24 VDC; 0.5 A; PROFIsafePlease wait ...Add to shopping listBuy via Distributor eShopGenerate DatasheetDownloads as zipCompareAdd to WatchlistFind distributorsConfigure