ABB NDSI02 Digital Input ModuleDescription The ABB NDSI02 is a high reliability digital input module from the Bailey Net 90 and Infi 90 control systems. It functions as a passive contact input interface, enabling accurate signal acquisition from field devices and seamless integration with ABBs logic controllers and multifunction processors. Specifications Model Number: NDSI02 System Compatibility: Bailey Net 90, Infi 90, PC 90 Processor, Logic Master Module, Multi Function