24 [V], 8-Channel (Sinking Input), 100 [µs] C Series Digital Module
24 [V], 8-Channel (Sinking Input), 100 [µs] C Series Digital Module The NI-9421 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 and has an LED indicating the state of that channel. The NI-9421 offers isolation between the input channels and earth ground.
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