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The NI9375 is a digital I/O interface that works with industrial logic levels and signals for direct connection to a wide array of industrial switches, transducers, and other devices. Each digital input line is compatible with 24�V logic levels, and all the output lines are compatible with 6�V to 30�V signals, based on the external power supply. The NI9375 offers isolation between the input and output banks from channeltoearth ground.�