RS-232 LED Link Signal Tester & Serial Monitor
DB-9 Male to DB-9 Female • Dual-Color Line LEDs • Port-Powered Plug & Play
Product Overview
Troubleshoot COM ports and serial line handshaking issues instantly with this inline RS-232 LED Link Signal Tester. Featuring DB-9 Male to DB-9 Female pass-through connectors and multi-pin dual-color LED indicators, this compact tool provides clear real-time monitoring of data flow and voltage states. Completely port-powered and driverless, it is an indispensable addition to any technician's toolkit.
Key Features Dual-Color LED Status
Provides visual pin-by-pin diagnostics for TXD, RXD, RTS, CTS, DTR, DSR, DCD, and RI lines.
Port-Powered Design
Operates entirely off signal voltage—no batteries, AC adapters, or external power cords needed.
Universal Plug & Play
Hardware-level passthrough requires no driver installation; compatible with Windows, Linux, and macOS environments.
Product Specifications Connectors DB-9 Male to DB-9 Female (Pass-Through) Communication Standard RS-232 Serial Indicators Multi-Pin Dual-Color LEDs (TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI) Power Source RS-232 Line Powered (No External Power Needed) OS Compatibility OS Independent (Windows 11/10/8/7, Linux, macOS) Package Contents
- 1 × DB-9 Male to DB-9 Female RS-232 LED Link Signal Tester
Shipping Information
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