National Instruments NI PXI-2566 16 SPDT Relay Module Card

NI National Instruments SCXI-1163 32-ch Optically Isolated Digital Output Module

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National Instruments NI PXI-2566 Relay Switch Card, 16ch SPDT

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National Instruments NI SCXI-1166 / 32-SPDT Relay Module

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NI National Instruments SCXI-1160 16-channel SPDT Relay Switch Module