StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable

GGLABS T232 - Mini RS-232 DB9M-DB9F Break-Out Tester/LED Monitor

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Product Review

RS232 signal monitor with bi-color red/green LEDs
Monitor all 8 RS-232 signals
Allow to disconnect and rewire as necessay (wires not included - uses standard breadboard wires)
Standard DB9F/DB9M connectors
Ideal for embedded system debugging

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StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable - DB9 RS232 Serial Extension Cable - Male to Female Cable