---
product_id: 241567114
title: "DTECH DB9 to RJ45 Serial Adapter RS232 Female to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices"
brand: "dtech"
price: "₱857"
currency: PHP
in_stock: true
reviews_count: 8
category: "Dtech"
url: https://www.desertcart.ph/products/241567114-dtech-db9-to-rj45-serial-adapter-rs232-female-to-rj
store_origin: PH
region: Philippines
---

# Supports 20mA current rating Extends RS232 signals up to 65ft DB9 Female to RJ45 Female adapter DTECH DB9 to RJ45 Serial Adapter RS232 Female to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices

**Brand:** dtech
**Price:** ₱857
**Availability:** ✅ In Stock

## Summary

> 🔗 Bridge the old with the new—RS232 meets RJ45 in style!

## Quick Answers

- **What is this?** DTECH DB9 to RJ45 Serial Adapter RS232 Female to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices by dtech
- **How much does it cost?** ₱857 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/241567114-dtech-db9-to-rj45-serial-adapter-rs232-female-to-rj)

## 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

- • **Plug & Play Simplicity:** No drivers or power plugs needed—just connect and communicate instantly.
- • **Universal Compatibility:** Works flawlessly with laptops, printers, modems, CNC machines, and more.
- • **Extended Reach, No Compromise:** Extend serial communication up to 65 feet using affordable Cat5/Cat6 cables.
- • **Secure & Hassle-Free Connection:** Thumbscrews ensure a rock-solid, vibration-resistant link every time.
- • **Seamless Serial Data Transmission:** Convert your legacy RS232 devices to modern RJ45 cabling with ease.

## 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-compatible interfaces. Supporting data transmission distances up to 65 feet over Cat5 or Cat6 cables, it ensures reliable, bi-directional communication for a wide range of professional devices including computers, printers, modems, and industrial equipment. Featuring secure thumbscrew connectors and a matte finish, this adapter offers a plug-and-play experience with a 180-day limited warranty, making it an essential tool for modernizing legacy serial setups.

## Description

Connector A: DB9 9 Pin Female 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 Female to RJ45 Female Serial Adapter

Review: Great Adapters - Work as a charm. Perfect fit.
Review: Works perfectly - Worked great for a what I needed it for. Wiring diagram was easy to understand.

## Features

- A simple, cost effective solution to process serial data communication between RS232 COM port devices over inexpensive cat5 cat6 RJ45 network cable
- DB9 female to RJ45 modular adapter converts DB9 female connector into an RJ45 female connector (DB9 female - RJ45 Female 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 female 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 | B08JLWRFH6 |
| Best Sellers Rank | #26 in Serial Adapters |
| Brand | DTECH |
| Color | black |
| Compatible Devices | Desktop |
| Connector Type | RJ45 |
| Current Rating | 20 Milliamps |
| Customer Reviews | 4.4 out of 5 stars 157 Reviews |
| Finish | Matte |
| Finish Type | Matte |
| Item Type Name | RS232 to Ethernet Converter |
| Item Weight | 0.01 Kilograms |
| Manufacturer | guangzhouditedianzikejiyouxiangongsi |
| Model Number | CB0241 |
| Number of Items | 1 |
| Number of Ports | 2 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| Specific Uses For Product | PC |
| Unit Count | 1.0 Count |
| Warranty Description | 180 days from purchase date |
| Warranty Type | Limited |

## Product Details

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

## Images

![DTECH DB9 to RJ45 Serial Adapter RS232 Female to RJ-45 Female Ethernet Converter Compatible with Standard 9 Pin RS-232 Devices - Image 1](https://m.media-amazon.com/images/I/519pJPO8fuL.jpg)

## Questions & Answers

**Q: Despite product title, this is not an "Ethernet Converter", is it? It just uses ethernet cable?**
A: Hi, DB9 to RJ45 adapter is used to process serial data communication between RS232 port devices over an inexpensive Ethernet cable, not to process Ethernet connection for internet signal.

**Q: Is the listed pinout correct for this product?**
A: Hello, this 9 pin to ethernet adapter's pinout is 1-1, 2-2, 3-3, 4-4, 5-5, 6-6, 7-7, 8-8, 9-x (straight through connector, please check the updated pinout picture)

**Q: Can this be used with a USB-to-RJ45 console/rollover cable to connect to DB9 console porton a switch or router?**
A: Hi, this straight through DB9 to RJ45 connector should work for your situation. If not, please feel free to contact us via the order page's "contact seller" for a return.

**Q: are these crossover (null modem) connectors or straight through?**
A: Hi, these are straight through DB9 to RJ45 connectors.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Adapters
*by O***A on September 24, 2025*

Work as a charm. Perfect fit.

### ⭐⭐⭐⭐⭐ Works perfectly
*by T***N on July 29, 2025*

Worked great for a what I needed it for. Wiring diagram was easy to understand.

### ⭐⭐⭐⭐⭐ Helps in the battle between old and new technology.
*by Z***S on January 9, 2025*

Fir those whe refuse to throw out old gadgets, this is for you. Sometmes the new talks with the old, sometimes they don't

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**Shop now:** [https://www.desertcart.ph/products/241567114-dtech-db9-to-rj45-serial-adapter-rs232-female-to-rj](https://www.desertcart.ph/products/241567114-dtech-db9-to-rj45-serial-adapter-rs232-female-to-rj)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-23*