How do I connect devices using the XMSJSIY DB9 to RJ45 adapter?

Connect the DB9 male end of the adapter to your serial device's DB9 port and the RJ45 female end to a Cat5/Cat6 Ethernet cable. The other end of the Ethernet cable connects to an RJ45 female port on another adapter, which then connects to your computer's serial port or network interface. Ensure you use compatible cable configurations (e.g., male-to-female) for your setup.

What is the maximum reliable distance for this DB9 to RJ45 extender?

The adapter supports serial data transmission up to 100 meters. For optimal performance and signal integrity, it is recommended to use the adapter within a distance of 1-15 meters. This range is sufficient for most industrial, office, or home network extensions.

Does this adapter require external power?

No, this DB9 to RJ45 adapter is designed to be plug-and-play and does not require any external power source. It draws power directly from the connected serial port, making it convenient and easy to use without additional setup.

Can I use this adapter with my Windows or Mac computer?

Yes, this adapter is compatible with Windows, macOS, and Linux operating systems. While it is plug-and-play for basic functionality, you may need to install specific drivers for the chipset (e.g., FTDI, Prolific, CH340) depending on your operating system version and the specific serial device you are connecting.

What is the difference between straight-through and null modem serial adapters?

A straight-through adapter connects pins directly, typically used to connect a serial device to a computer. A null modem adapter crosses the transmit and receive lines, used to connect two serial devices directly to each other. This XMSJSIY adapter functions as a straight-through extender for serial-to-Ethernet conversion.

How to buy an original XMSJSIY DB9 to RJ45 adapter in India?

Purchase this adapter from authorized US retailers and authorized brand partners via crowcrowcrow. It is factory-sealed, imported per-order, and includes all customs duties and GST. Delivery is via ExpressBox tracked shipping, ensuring you receive an authentic product with clear pricing.

XMSJSIY DB9 RS232 to RJ45 Extender 2-Pack | Serial to Ethernet Converter

Name: XMSJSIY DB9 RS232 to RJ45 Extender Adapter 2-Pack | Extends Serial Data Up to 100m
Brand: XMSJSIY
SKU: gwj2330
Price: 1681.00 INR
Availability: InStock

About this item

The XMSJSIY DB9 RS232 to RJ45 Extender Adapter (2-Pack) enables reliable serial data transmission over long distances using standard Ethernet cables. This adapter bridges the gap between DB9 serial ports and RJ45 network interfaces, supporting bidirectional transparent transmission for devices like computers, industrial machinery, PDAs, and barcode scanners. It's designed for ease of use with a plug-and-play setup and no external power requirement, making it a convenient solution for extending serial connectivity.

Utilizing high-quality alloy transmission ports and environmentally friendly PVC material, this adapter minimizes impedance and interference, enhancing data transmission rates and quality. The 9-pin DB9 male to RJ45 female interface is compatible with UTP Cat 5/Cat 6 cables, allowing for extensions up to 100 meters (recommended within 15 meters for optimal performance). This makes it suitable for various applications requiring extended serial communication without signal degradation.

For Indian users, this adapter provides a cost-effective way to extend legacy serial equipment connectivity. While local alternatives may exist, this USA-sourced adapter ensures authentic performance and reliable data transfer. All customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping. Ensure you have the correct cable configuration (male-to-male, male-to-female, or female-to-female) for your specific setup.

Key Features

DB9 to RJ45 adapter: used for TCP/IP network interface with serial port network function, support serial data and network data bidirectional transparent transmission.Compatible with desktop computer, digital machine tools, PDA, bar code and other standard DB9 serial devices, stable and reliable performance, support maximum distance 66ft.
The DB9 RS232 COM signal is transmitted over the network cable,When using this adapter, it is recommended to use within a distance of 1-15 meters.Requires no external power, easy and Convenient to use.
High quality alloy transmission port reduce the transmission impedance and interference,environmentally friendly PVC material, super wear-resistant, Integral injection molding. improve data transmission rate and transmission quality.
Interface: DB9 Male to RJ45 female; 9pin/8P8C.the adapter run RS232 data over long distances (up to 100m) using UTP Cat 5/ Cat6 cable to bridge the gap.
Special Note: Usually this product needs to be used in pairs, specifically divided into: female to female, male to female, male to male three kinds of situations. Can also be used alone.

Why choose this product

Reliable Serial Extension for Indian Setups

This adapter provides a robust solution for extending serial RS232 communication up to 100 meters using readily available Ethernet cables. Its durable construction and plug-and-play functionality ensure reliable data transfer for industrial machines, POS systems, or lab equipment. Unlike some local options that might compromise on build quality or signal integrity, this USA-sourced adapter is built to last, minimizing transmission impedance and interference for consistent performance. All customs duties and GST are pre-paid, ensuring a transparent landed price for Indian customers.

Ideal for Legacy Systems, Skip if Using Modern USB-Only Devices

This adapter is perfect for users needing to connect older serial devices (DB9 ports) to a network or extend their reach. It's highly recommended for industrial automation, point-of-sale systems, and laboratory instruments that rely on RS232 communication. However, if your devices exclusively use USB ports and do not have a DB9 serial interface, this adapter will not be compatible. For purely USB-based extensions, consider a USB extender solution instead.

How to use

Plug the DB9 male end of one adapter into the DB9 serial port of your device (e.g., computer, machine, PDA). Ensure a secure connection. — Connect Serial Device
Connect one end of a standard Cat5 or Cat6 Ethernet cable to the RJ45 female port of the first adapter. Connect the other end of the Ethernet cable to the RJ45 female port of the second adapter. — Connect Ethernet Cable
Plug the DB9 male end of the second adapter into the DB9 serial port of your target device (e.g., computer, network switch). Ensure the distance between adapters is within 15 meters for optimal performance. — Connect Second Adapter
Power on your devices. Your operating system should recognize the serial connection. Install necessary drivers if prompted for the specific chipset used in the adapter. — Verify Connection

Example scenarios

Typical situations where XMSJSIY DB9 RS232 to RJ45 Extender Adapter 2-Pack | Extends Serial Data Up to 100m helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

Connecting legacy industrial machinery in a factory in Pune to a central network.

How this product helps

This 2-pack adapter set allows extending the DB9 serial connection up to 100 meters over existing Cat5/Cat6 Ethernet cabling, enabling remote monitoring and control without needing to replace the machinery.

Scenario 2

Illustrative example

Where it helps

Extending the reach of a point-of-sale (POS) system's serial printer in a retail store in Delhi.

How this product helps

Use one adapter to connect the POS terminal's DB9 port to an Ethernet cable, and the other adapter to connect the cable to the serial printer, allowing placement up to 15 meters away for better counter layout flexibility.

Technical specifications

Setup & usage

Recommended Use	Extending serial RS232 data over Ethernet cable
Compatible Devices	Desktop computers, digital machine tools, PDAs, barcode scanners, other standard DB9 serial devices
Operating Systems	Windows, macOS, Linux (driver installation may be required)
Cost per use	2 adapters at ₹1,681 — ₹841 per adapter

How we compare

Feature	XMSJSIY DB9 RS232	Others
Transmission Distance	Up to 100m (15m recommended) over Cat5/6	Varies by brand; often limited to 15-30m for basic adapters
Power Requirement	No external power needed	Most require no external power, but some may need USB power
Build Quality	High-quality alloy ports, PVC jacket, integral molding	Varies; some may use lower-grade materials leading to interference
Data Transmission	Bidirectional transparent transmission, enhanced rate & quality	May have lower data rates or higher interference on cheaper models
Cost per adapter	2 adapters at ₹1,681 — ₹841 per adapter	Typically ₹400-800 per adapter, depending on brand and features

SKU	gwj2330
GTIN	0755641611589
Brand	XMSJSIY
Model Name	DB9 RS232 to RJ45 Extender
Interface	DB9 Male to RJ45 Female
Number of Pins	9
Connector Gender	Male-to-Female
Cable Type	Ethernet (Cat 5/Cat 6 compatible)
Maximum Extension Distance	100 meters (recommended 1-15 meters)
Material	Polyvinyl Chloride (PVC), Alloy
Color	Black
Power Source	No external power required
Item Package Quantity	2
Item Weight	0.1 kg (approx.)
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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XMSJSIY DB9 RS232 to RJ45 Extender Adapter 2-Pack | Extends Serial Data Up to 100m

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About this item

Key Features

Why choose this product

How to use

Example scenarios

Technical specifications

Setup & usage

How we compare

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