ABB NDIO-02 Digital I/O Extension ModuleDescription ABB NDIO 02 is a digital I O extension module designed to expand input output capacity for ABB automation systems, particularly the ACS800 drive series. It enhances control flexibility and system scalability in industrial environments. Specifications Model Number: NDIO 02 Product Type: Digital I O Extension Kit Application: ACS800 drive series and compatible ABB systems Dimensions: Depth: 108 mm Height: 75 mm Width: 45 mm Net Weight: 0. 5