---
product_id: 226881095
title: "RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module"
brand: "oono"
price: "R656"
currency: ZAR
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.za/products/226881095-rs232-breakout-tester-led-monitor-db9-male-to-female-breakout
store_origin: ZA
region: South Africa
---

# LED Status Indicators Plug & Play DIP Switch Configurable RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module

**Brand:** oono
**Price:** R656
**Availability:** ✅ In Stock

## Summary

> 🔍 Test with Confidence: Your RS-232 Companion Awaits!

## Quick Answers

- **What is this?** RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module by oono
- **How much does it cost?** R656 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/226881095-rs232-breakout-tester-led-monitor-db9-male-to-female-breakout)

## Best For

- oono enthusiasts

## Why This Product

- Trusted oono brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust Design:** Easily unscrew jack sockets for flexible connections.
- • **Customizable Testing:** DIP switch allows for easy signal management.
- • **Visual Data Monitoring:** 8 vibrant LEDs provide real-time logic state feedback.
- • **Effortless Connectivity:** No external power or drivers needed—just plug and play!
- • **Versatile Compatibility:** Works seamlessly with Windows, Linux, and Mac OS.

## Overview

The RS232 Breakout Tester LED Monitor is a user-friendly tool designed for testing RS-232 data links without the need for an oscilloscope. Featuring 8 dual-color LEDs for clear logic state indication and a DIP switch for customizable signal management, this device is compatible with a wide range of operating systems and requires no external power or drivers.

## Description

RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module

## Features

- Connect in series with any RS-232 interface for testing a serial RS-232 data link. Simple and easy, no oscilloscope is needed. DIP switch can setting disconnect or reconnect any signal, and support external probe test signal from male or female position.
- 8 double-color (red and green) LEDs indicate the logic states for respective data lines. Green for logic HIGH and red for logic LOW. Full RS232 spec compliant with LEDs for all 8 signals: DCD, RXD, TXD, DTR, DSR, RTS, CTS, RI.
- No external power required. No driver required. Plug and play. Jack sockets(nuts) on the tester can be unscrewed easily(with metal shell held in place) if needed to mate with another connector that has jack sockets.
- OS Compatibility: Windows 98, Me, XP, 2000, 2003, CE, Vista, Windows 7, and Windows 8 as well as Linux and Mac OS 10.X, ect.

## Product Details

- **Brand:** OONO
- **Power Source:** Corded Electric
- **Style:** DB9 MF
- **Color:** Green,Red
- **Item Weight:** 0.01 Ounces

## Images

![RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module - Image 1](https://m.media-amazon.com/images/I/817MJdiV2DL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This thing works great!
*by S***R on June 8, 2025*

I needed a way to verify that the signal from the software was getting from the computer to the end of the cable. This did exactly that for me!

### ⭐⭐⭐⭐⭐ Monitors activity on the 8 lines of a DB-9 serial connection. Does what I need.
*by N***K on April 21, 2025*

My application wasn't very sophisticated, but this did show me what was going on with the serial connection I was troubleshooting.

### ⭐⭐⭐⭐ Pretty Great RS-232 Lines Indicator
*by B***T on February 7, 2024*

What it does:1. Show while lines are disconnected, low, and highno light = disconnectedred = lowgreen = high2. Allow any lines to be turned off (DIP switches)3. Allow jumpers (to cross-over, for example)Issues:1. Jumper cables don't fit (the holes are too small)2. Resistors barely fit (but at least they're quite snug once pushed into place)3. It's upside down!Why would the lights be placed on the wrong side? Most equipment I've encountered has the larger portion on top (like my 2nd image), so the display is facing away from you.This is not an RS-232 analyzer. It just shows the individual lines and allows you to turn individual ones off for debugging, or to cross them using very thin wire, such as a low-value resistor, which I had handy. (This allows you to create a crossover connection like a null modem cable for debugging your connection.)(In the photo, I've turned off all, but the TX, RX, and Gnd connections for testing a microcontroller connection.)

## Frequently Bought Together

- RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module
- DB9 null modem male to female slimline data transfer serial port adapter 2 Pack
- CABLEMAX RS-232 LED Link Tester DB-9 Male to DB-9 Female

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-24*