Duelco DSC-MO4Product ID: 1103431DSC MO4 is an output extension unit. DSC MO4 gives you the advantage of 4 additional OSSD output pairs.PDF files: Duelco DSC-MO2-MO4 data sheetDuelco Safety Controller manualDuelco DSC-CSU manualDuelco DSC-Expans modules manualDuelco DSC-Fieldbus manualDuelco DSC-MCM manualDuelco DSC-MCT manualDuelco DSC-MSC manualDuelco DSC-MV manual