---
product_id: 509292181
title: "waveshare RS232/485/422 to RJ45 Ethernet Converter, TCP/IP to Serial, Modbus Gateway Support, Industrial Isolated Rail-Mount RS232/485/422 Serial Server with POE Function, Multi Communication Modes"
brand: "waveshare"
price: "55271CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "Waveshare"
url: https://www.desertcart.sn/products/509292181-waveshare-rs232-485-422-to-rj45-ethernet-converter-tcp-ip
store_origin: SN
region: Senegal
---

# Wide 6~36V DC & PoE power input 10/100M PoE Ethernet support 3-in-1 RS232/485/422 ports waveshare RS232/485/422 to RJ45 Ethernet Converter, TCP/IP to Serial, Modbus Gateway Support, Industrial Isolated Rail-Mount RS232/485/422 Serial Server with POE Function, Multi Communication Modes

**Brand:** waveshare
**Price:** 55271CFA
**Availability:** ✅ In Stock

## Summary

> ⚡ Power Your Network with Smart Serial Versatility!

## Quick Answers

- **What is this?** waveshare RS232/485/422 to RJ45 Ethernet Converter, TCP/IP to Serial, Modbus Gateway Support, Industrial Isolated Rail-Mount RS232/485/422 Serial Server with POE Function, Multi Communication Modes by waveshare
- **How much does it cost?** 55271CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/509292181-waveshare-rs232-485-422-to-rj45-ethernet-converter-tcp-ip)

## Best For

- waveshare enthusiasts

## Why This Product

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

## Key Features

- • **Multi-Protocol Flexibility:** Supports TCP/IP, UDP, MQTT, JSON, and Modbus for versatile communication and easy integration.
- • **Advanced Network Management:** Configure via web browser or software with multi-host roll-polling, heartbeat packets, and NTP support.
- • **Power Over Ethernet Enabled:** Simplify installations with IEEE 802.3af PoE support—power and data over a single cable.
- • **Robust Industrial Isolation:** Ensure signal integrity and protect your network with industrial-grade power and signal isolation.
- • **Universal Serial Connectivity:** Seamlessly switch between RS232, RS485, and RS422 interfaces for ultimate device compatibility.

## Overview

The Waveshare RS232/485/422 to RJ45 Ethernet Converter is an industrial-grade, rail-mount serial server that bridges legacy serial devices with modern Ethernet networks. Featuring tri-mode serial ports, PoE power support, and multi-protocol compatibility including Modbus and MQTT, it delivers reliable, isolated, and flexible communication for demanding industrial and IoT applications.

## Description

Overview Rail-Mount Serial Server, RS232/485/422 to RJ45 Ethernet Module, TCP/IP to serial, With POE Function Specifications Product type---- Serial server, Modbus Gateway, MQTT Gateway Primary function---- Bi-directional transparent data transmission between RS232/485/422 and Ethernet Communication interface---- RS232 port × 1; RS485 port × 1; RS422 port × 1; Ethernet port × 1 Power supply---- DC power port, 6 ~ 36V DC screw terminal, or PoE port Isolation protection---- Power isolation, Signal isolation Communication interface Ethernet---- PoE network port, support IEEE 802.3af standard, 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection Serial port---- Isolated RS232/485/422 Serial parameters Baud rate---- 300 ~ 115200 bps Parity bit---- none, odd, even, mark, space Data bits---- 5 ~ 9 bits Flow Control---- no flow control Software Protocol---- ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS Configuration method---- host, web browser, device management functions library Communication method---- TCP/IP direct communication, VCOM Operating mode---- TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast Other Operating temperature---- -40℃ ~ 85℃ Humidity range----5% ~ 95% relative humidity Dimensions---- L × W × H: 88.7 × 64.5 × 24.2 mm Package Content 1. RS232/485/422 TO POE ETH (B) x1 NOTE: Development Resources and Technical Support are provided, please feel free to contact us if you have any problem!

Review: Great item - Great item, works good but I can't use it because it was made in China and the software is from China.
Review: entrega rapida - fácil de configurar, manuales disponibles en Internet

## Features

- RS232/485/422 to RJ45 Ethernet Module with POE function, onboard RS232 / 485 / 422 three different interfaces, bi-directional transparent data transmission between RS232/485/422 and Ethernet, suitable for more application scenarios
- Industrial isolated rail-mount RS232/485/422 serial server, support PoE Ethernet port power supply, suitable for IEEE 802.3af PoE standard, support screw terminal and DC power port for power supply, DC 6~36V wide voltage range input
- Support Modbus Gateway, suitable for Modbus networking upgrade, can be used with specific configuration software
- Supports TCP Server / TCP Client / UDP Mode / UDP Multicast multi communication modes, MQTT/JSON to Modbus, more flexible conversion between different protocols
- Support Multi Hosts Roll-Polling, User-Defined Heartbeat/Registration Packet, NTP Protocol Support, Multi Configuration Methods

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BNKZ1LNJ |
| Best Sellers Rank | #192 in Serial Adapters #446 in Computer Networking Switches |
| Brand | waveshare |
| CPU Model | Pentium |
| CPU Socket | Socket 370 |
| Chipset Type | Intel 8xx or Intel 9xx |
| Compatible Devices | RS232/485/422 Devices |
| Compatible Processors | Intel Pentium |
| Customer Reviews | 4.2 out of 5 stars 34 Reviews |
| Graphics Card Interface | PCI Express |
| Item Dimensions L x W x H | 3.49"L x 2.54"W x 0.95"H |
| Main Power Connector Type | Ethernet (PoE), Screw Terminal |
| Manufacturer | Waveshare |
| Model Name | RS232/485/422 To POE ETH Converter |
| Model Number | RB-Wav-734 |
| Number of Ethernet Ports | 1 |
| Number of Ports | 4 |
| Platform | Web Browser |
| Processor Socket | Socket 370 |
| RAM Memory Technology | DDR4 |
| System Bus Standard Supported | PCIe |
| Total Usb Ports | 4 |
| UPC | 790885234606 |

## Product Details

- **Brand:** waveshare
- **CPU Model:** Pentium
- **CPU Socket:** Socket 370
- **Chipset Type:** Intel 8xx or Intel 9xx
- **Compatible Devices:** RS232/485/422 Devices
- **Compatible Processors:** Intel Pentium
- **Main Power Connector Type:** Ethernet (PoE), Screw Terminal
- **Model Name:** RS232/485/422 To POE ETH Converter
- **Platform:** Web Browser
- **RAM Memory Technology:** DDR4

## Images

![waveshare RS232/485/422 to RJ45 Ethernet Converter, TCP/IP to Serial, Modbus Gateway Support, Industrial Isolated Rail-Mount RS232/485/422 Serial Server with POE Function, Multi Communication Modes - Image 1](https://m.media-amazon.com/images/I/51qzE3Z1pjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great item
*by V***R on November 17, 2024*

Great item, works good but I can't use it because it was made in China and the software is from China.

### ⭐⭐⭐⭐ entrega rapida
*by G***S on August 6, 2025*

fácil de configurar, manuales disponibles en Internet

### ⭐ It might work, but the instructions are completely opaque, and ridiculously complex.
*by K***S on December 8, 2024*

I needed a Modbus RTU to Modbus TCP converter to go between a small network of PLCs, power meters, and genset controllers. Never could make sense of the instructions: specifically the application program(s) being in Chinese and the specific example for RTU to TCP just plain old didn't work, even after hours of messing with it. I've used a ton of other Waveshare products without any issues at all, but based on my experience and the experience of another user I know in meat-space, anything Waveshare with "to ethernet" in the product description is too difficult to work with when evaluated in terms of my time. YMMV, but I'll stick with other more expensive but *easily* functional solutions.

## Frequently Bought Together

- RS232/485/422 to RJ45 Ethernet Converter, TCP/IP to Serial, Modbus Gateway Support, Industrial Isolated Rail-Mount RS232/485/422 Serial Server with POE Function, Multi Communication Modes
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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-07-23*