Keithley PDMA-32 Parallel Digital I/O Interface GPIO Model Railroad Automation

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KEITHLEY PDISO-8 PC7082 8 CHANNEL ISOLATED DIGITAL I/O ISA BOARD

Keithley Model: MC581. 500-SERIAL. RS-232 To IEEE-488 Converter.

KEITHLEY METRABYTE 32-CHANNEL TEMPERATURE DAS-TEMP ISA BOARD 24415B PC7452 14204

National Instruments AT-GP1B/TNT Interface Card for ISA Bus - Free shipping.

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Keithley DAS-1602 100kS/s Analog and Digital I/O Board 8-bit ISA DAQ w/AUX Cable