---
product_id: 378228505
title: "DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices"
brand: "dtech"
price: "€ 23.45"
currency: EUR
in_stock: true
reviews_count: 5
category: "Dtech"
url: https://www.desertcart.hr/products/378228505-db9-to-rj45-serial-adapter-rs232-male-to-rj-45
store_origin: HR
region: Croatia
---

# Supports 1 Amp current rating Extends RS232 signals up to 65ft DB9 Male to RJ45 Female adapter DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices

**Brand:** dtech
**Price:** € 23.45
**Availability:** ✅ In Stock

## Summary

> 🔗 Connect Classic Tech with Modern Ease — Never Miss a Signal!

## Quick Answers

- **What is this?** DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices by dtech
- **How much does it cost?** € 23.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/378228505-db9-to-rj45-serial-adapter-rs232-male-to-rj-45)

## 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

- • **Universal Compatibility:** Works flawlessly with laptops, printers, modems, CNC machines, POS devices, and more.
- • **Compact Matte Black Design:** Discreet, professional finish that fits perfectly in any tech setup or toolbox.
- • **Secure, Tool-Free Connection:** Thumbscrews ensure a rock-solid, no-slip fit every time—no extra tools needed.
- • **Extend Your Reach Up to 65 Feet:** Use paired adapters with Cat5e/Cat6 cables to keep your serial connections flexible and far-reaching.
- • **Seamless Serial-to-Ethernet Bridge:** Convert your classic RS232 devices to modern RJ45 cabling with zero hassle.

## Overview

The DTECH DB9 to RJ45 Serial Adapter is a compact, cost-effective solution designed to convert standard 9-pin RS232 serial connections into RJ45 Ethernet cabling. Supporting data transmission distances up to 65 feet when used in pairs with Cat5e or Cat6 cables, it ensures reliable, bi-directional communication for a wide range of professional devices including laptops, printers, modems, and industrial equipment. Featuring secure thumbscrew connectors and a sleek matte black finish, this adapter is a must-have for managers and tech pros looking to future-proof legacy serial setups with modern cabling standards.

## Description

Connector A: 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. What’s Included 1x DB9 Male to RJ45 Female Serial Adapter

Review: Good product - They worked perfectly
Review: Excellent adapters to add to the toolbox - Item was just as described and connected like a champ.

## Features

- A simple, cost effective solution to process serial data communication between RS232 COM port devices over inexpensive cat5 cat6 RJ45 network cable
- DB9 male to RJ45 modular adapter converts DB9 male connector into an RJ45 female connector (DB9 male - RJ45 Female pinout: straight through 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 male 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 | B08JLX4N6K |
| Best Sellers Rank | #37,261 in Computers ( See Top 100 in Computers ) #111 in Serial Adapters |
| Brand | DTECH |
| Color | black |
| Colour | black |
| Compatible Devices | Desktop |
| Compatible devices | Desktop |
| Connector Type | RJ45 |
| Connector type | RJ45 |
| Current Rating | 1 Amps |
| Customer Reviews | 4.5 out of 5 stars 113 Reviews |
| Finish | Matte |
| Finish type | Matte |
| Item Type Name | RS232 to Ethernet Converter |
| Item Weight | 0.02 Kilograms |
| Manufacturer | DTECH |
| Mfr Part Number | CB0240 |
| Model Number | CB0240 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Smart Home Compatibility | Not Smart Home Compatible |
| Specific Uses For Product | PC |
| Specific uses for product | PC |
| Unit Count | 1.0 Count |
| Warranty Type | Limited |

## Product Details

- **Brand:** DTECH
- **Colour:** black
- **Compatible devices:** Desktop
- **Connector type:** RJ45
- **Specific uses for product:** PC

## Images

![DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices - Image 1](https://m.media-amazon.com/images/I/51Zfc6V09PL.jpg)

## Customer Reviews

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

They worked perfectly

### ⭐⭐⭐⭐⭐ Excellent adapters to add to the toolbox
*by U***H on 7 March 2026*

Item was just as described and connected like a champ.

### ⭐⭐⭐⭐⭐ Great for industrial work!
*by T***S on 21 February 2026*

Great for when I’m out working in the plant.

## Frequently Bought Together

- DTECH DB9 to RJ45 Serial Adapter RS232 Male to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices
- SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P)
- OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)…

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**Shop now:** [https://www.desertcart.hr/products/378228505-db9-to-rj45-serial-adapter-rs232-male-to-rj-45](https://www.desertcart.hr/products/378228505-db9-to-rj45-serial-adapter-rs232-male-to-rj-45)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-09-09*