---
product_id: 241211962
title: "RS232 DB9 to RJ45 Serial Adapter DB-9 Female/Male to RJ-45 Female Ethernet Converter (2 Pack)"
brand: "dtech"
price: "$30"
currency: NZD
in_stock: true
reviews_count: 4
category: "Dtech"
url: https://www.desertcart.nz/products/241211962-rs232-db9-to-rj45-serial-adapter-db-9-female-male
store_origin: NZ
region: New Zealand
---

# Bi-directional data flow 65ft max cable extension Thumbscrew secure connection RS232 DB9 to RJ45 Serial Adapter DB-9 Female/Male to RJ-45 Female Ethernet Converter (2 Pack)

**Brand:** dtech
**Price:** $30
**Availability:** ✅ In Stock

## Summary

> 🔗 Unlock seamless serial connectivity—because your devices deserve the best link-up!

## Quick Answers

- **What is this?** RS232 DB9 to RJ45 Serial Adapter DB-9 Female/Male to RJ-45 Female Ethernet Converter (2 Pack) by dtech
- **How much does it cost?** $30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/241211962-rs232-db9-to-rj45-serial-adapter-db-9-female-male)

## Best For

- dtech enthusiasts

## Why This Product

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

## Key Features

- • **Dual-Pack Convenience:** Two adapters included for easy pairing and instant serial communication extension.
- • **Rock-Solid Connection:** Thumbscrew locking ensures your data link stays secure and stable during critical operations.
- • **Plug & Play Simplicity:** Effortless DB9 to RJ45 conversion with no complex setup—just connect and go.
- • **Universal Compatibility:** Works flawlessly with all standard 9-pin D-sub RS232 devices from laptops to CNC machines.
- • **Extend Your Serial Reach:** Seamlessly extend RS232 signals up to 65 feet using affordable Cat5/Cat6 cables.

## Overview

The DTECH RS232 DB9 to RJ45 Serial Adapter (2 Pack) offers a cost-effective, reliable solution to extend and convert RS232 serial data communication over standard Cat5 or Cat6 Ethernet cables up to 65 feet. Featuring bi-directional data flow, secure thumbscrew connections, and broad compatibility with 9-pin D-sub devices, this adapter pair is ideal for professionals needing stable, plug-and-play serial connectivity across laptops, printers, routers, CNC machines, and more.

## Description

What’s Included 1x DB9 Female to RJ45 Female Serial Adapter 1x DB9 Male to RJ45 Female Serial Adapter Connector A: DB9 9 Pin Female, DB9 9 Pin Male Connector B: RJ45 8 Pin Female Data cabling transmission signal up to 20M Compatible with Standard 9 Pin D-sub RS-232 Devices e.g. computer laptop, printer, modem, router, PDA, POS device, digital CNC machine tool, Barcode scanner, etc. Please be Noted: DB9 serial RJ45 adapter is only an adapter for extending RS232 serial data (max. distance 65ft), not a console adapter. Usually this adapter needs to be used in pairs. DB9 serial data is transmitted over the network cable. To use this pair of adapters, you need to connect them with a cat5e or CAT6 cable.

Review: Good product - They worked perfectly
Review: Easy and work - Do the work

## Features

- A simple, cost effective solution to process serial data communication between RS232 COM port devices over inexpensive cat5 cat6 RJ45 network cable
- DB9 to RJ45 modular adapter converts DB9 connector into an RJ45 connector (DB9 - RJ45 pinout: 1-1, 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, 8-8, 9-x)
- A pair of DB9 to RJ45 socket coupler can be used a extender to extend rs232 serial signals up to 65ft
- Bi-directional DB-9 to RJ-45 female converter comes with thumbscrews for easy and secure connection
- (Please be noted it's NOT 15 pin VGA video port) It's compatible with Standard 9 Pin D-sub RS-232 Devices e.g. computer laptop, printer, modem, router, PDA, POS device, digital CNC machine tool, Barcode scanner, etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08JLYLG9S |
| Best Sellers Rank | #100 in Serial Adapters |
| Customer Reviews | 4.5 4.5 out of 5 stars (110) |
| Date First Available | September 21, 2020 |
| Department | boys |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 ounces |
| Item model number | CB0242 |
| Manufacturer | guangzhouditedianzikejiyouxiangongsi |
| Package Dimensions | 7.99 x 3.66 x 0.94 inches |

## Product Details

- **Brand:** DTECH
- **Color:** black
- **Compatible Devices:** Desktop
- **Connector Type:** RJ45
- **Specific Uses For Product:** PC

## Images

![RS232 DB9 to RJ45 Serial Adapter DB-9 Female/Male to RJ-45 Female Ethernet Converter (2 Pack) - Image 1](https://m.media-amazon.com/images/I/61ftA-QsEdL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by R***N on January 31, 2026*

They worked perfectly

### ⭐⭐⭐⭐⭐ Easy and work
*by W***S on July 17, 2025*

Do the work

### ⭐⭐⭐⭐ Fair Quality but one screw is missing threads
*by J***Y on May 11, 2022*

Quality is OK but not the greatest. Out of 4 screws, 1 has no threads so that adapter can not be properly installed.

## Frequently Bought Together

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-18*