The NI-9206 performs differential analog input with four programmable input ranges. The module provides up to 600 VDC (400 VDC in Europe) channel-to-earth ground isolation, making the module ideal for accurately monitoring large fuel cell and battery stacks. By referencing the module common (COM) to the middle of the NI-9206 bank, you can measure 16 consecutive cells and remain within 10 V of the module COM.