Review on 🔌 TENMA 72-9265 - Signal Cable Tester for Enhanced SEO by Will Kern

I used it for debugging bus destination sign RS 232 interface. It does not overload signal lines and immediately informs you about faulty cable connections. In the latter case, I found that the TXD and RXD signals are on opposite pins, resulting in a red light that indicates both a problem and a solution at the same time. A good thing !