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The NI9423 works with industrial logic levels and signals to connect directly to a wide array of industrial switches, transducers, and devices. Each channel is compatible with 24�V logic levels, can accept up to 30�V discrete logic levels, and has an LED that indicates the status.�The NI9423 offers isolation between the input and output banks from channel to earth ground. The NI9423 is a correlated digital module, so it can perform correlated measurements, triggering, and sychronization when installed in a CompactDAQ chassis.