Die 9 LEDs (rot, grün, aus) sind zweifarbig und informieren über den jeweils logischen Zustand der Datenleitungen.
System-S RS232 to RS232 Tester Diagnostic Tool with LED Lights Display
TENMA - 72-9265 - LINK TESTER, RS232 / DB9 LINK
RT03017 TENMA 72-9265 LINK TESTER RS232 / DB9 LINK
9 Pin DTECH RS232 to RS232 Serial Adapter RS232 Female to RS232 Female Converter
USB to RS232 Adapter with with CH340 Chipset USB2.0 Male to RS232 Female DB9 Serial 9 Pin Converter Cable 2m/6ft USB to RS232 Serial Adapter for Windows XP Windows Vista7 8 10 Mac OS 8.6 Above Linux
