---
product_id: 357158030
title: "RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module"
brand: "oono"
price: "$71.70"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/357158030-rs232-breakout-tester-led-monitor-db9-male-to-female-breakout
store_origin: US
region: United States of America
---

# 8 dual-color LEDs for real-time logic state Plug & play, no drivers needed DIP switch for customizable signal control RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module

**Brand:** oono
**Price:** $71.70
**Availability:** ✅ In Stock

## Summary

> ⚡ Master your serial connections with instant LED insight!

## Quick Answers

- **What is this?** RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module by oono
- **How much does it cost?** $71.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/357158030-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

- • **Zero Hassle Setup:** No external power or drivers required—just plug in and start diagnosing like a pro.
- • **Visual Logic Clarity:** 8 dual-color LEDs instantly reveal HIGH (green) or LOW (red) states across all RS-232 signals for precise troubleshooting.
- • **Universal Compatibility:** Works flawlessly across Windows (98 to 8), Linux, and Mac OS 10.X—future-proof your testing setup.
- • **Effortless Customization:** DIP switch lets you disconnect or reconnect signals on the fly, supporting external probe testing from either connector side.
- • **Instant Serial Diagnostics:** Connect seamlessly to any RS-232 interface and monitor data flow without bulky oscilloscopes.

## Overview

The RS232 Breakout Tester LED Monitor is a compact, plug-and-play diagnostic tool designed for professional-grade serial RS-232 data link testing. Featuring 8 dual-color LEDs that display real-time logic states, a DIP switch for signal control, and broad OS compatibility, it eliminates the need for oscilloscopes or complex setups. Ideal for engineers and IT pros who demand quick, reliable serial communication verification.

## 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | OONO |
| Power Source | Corded Electric |
| Style | Simple |
| Colour | Green,Red |
| Item Weight | 0.01 Ounces |
| Specification Met | CE |
| Manufacturer | CZH-LABS |
| Model | OONO-F1023 |
| Package Dimensions | 9.4 x 8.71 x 3.4 cm; 0.28 g |
| Item model number | OONO-F1023 |
| Mounting Hardware | no |
| Number of items | 1 |
| Batteries Included | No |
| Batteries Required | No |
| Does it contain liquid? | No |
| Country of Origin | USA |
| Item Weight | 0.28 g |

## Product Details

- **Brand:** OONO
- **Power Source:** Corded Electric
- **Style:** Simple
- **Colour:** 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)
![RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module - Image 2](https://m.media-amazon.com/images/I/71XIyyZ6HnL.jpg)
![RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module - Image 3](https://m.media-amazon.com/images/I/71NnJnFO8vL.jpg)
![RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module - Image 4](https://m.media-amazon.com/images/I/71r9ibulj8L.jpg)
![RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module - Image 5](https://m.media-amazon.com/images/I/81lXCwhMpQL.jpg)

## Frequently Bought Together

- RS232 Breakout Tester LED Monitor, DB9 Male to Female Breakout Module
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- CABLEMAX RS-232 LED Link Tester DB-9 Male to DB-9 Female

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-23*