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Grainger
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$2.93
Serial Extension Cable, DB9 Male To DB9 Female, RS-232, 9 Conductor, 1:1, 1 Foot
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RS232 To USB Adaptor Cable For Self-Contained Datalogger, 18 Inch RS232 To USB
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Shop RS232 Connection

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$15.95
C2G/Cables To Go 52033 DB9 M/F Serial RS232 Extension Cable (25 Feet, Black)
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