---
product_id: 540923793
title: "Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc."
brand: "waveshare"
price: "NT$96"
currency: TWD
in_stock: false
url: https://www.desertcart.tw/products/540923793-waveshare-rs485-to-wifi-ethernet-module-rail-mount-serial-server
store_origin: TW
region: Taiwan
---

# 802.11b/g/n WiFi support Wide 5~36V DC input Modbus & MQTT gateway Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc.

**Brand:** waveshare
**Price:** NT$96
**Availability:** ❌ Out of Stock

## Summary

> 🌐 Power your industrial IoT with unstoppable connectivity!

## Quick Answers

- **What is this?** Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc. by waveshare
- **How much does it cost?** NT$96 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/540923793-waveshare-rs485-to-wifi-ethernet-module-rail-mount-serial-server)

## 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

- • **Smart Remote Management:** Remote upgrade, custom heartbeat, and watchdog hardware ensure zero downtime and stable communication.
- • **Flexible Communication Modes:** Transparent transmission, Modbus TCP/RTU gateway, MQTT client, and HTTPD client modes for versatile deployment.
- • **Advanced Wireless Performance:** Supports 802.11b/g/n with strong signal power and security protocols (WPA2-PSK, AES encryption).
- • **Robust Industrial-Grade Design:** Rail-mount ready with flame-retardant casing and wide voltage support for reliable 24/7 operation.
- • **Seamless Multi-Protocol Connectivity:** Effortlessly bridge RS485, WiFi, and Ethernet for ultimate industrial IoT integration.

## Overview

The Waveshare RS485 to WiFi/Ethernet Module is a compact, rail-mount serial server designed for industrial environments. It supports multi-protocol communication including Modbus and MQTT, offers robust wireless connectivity with 802.11b/g/n standards, and features wide voltage input (5~36V DC). With advanced remote management, security, and flexible transmission modes, it ensures reliable, long-distance data acquisition and seamless integration into modern IoT networks.

## Description

Overview This is a RS485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to HTTPD Client, etc. With RS485, WIFI and Ethernet ports, the module can realize functions such as serial to WIFI, serial to Ethernet, Ethernet to WIFI and so on.   Specifications  1) Outline Communication interface: RS485, screw terminal Power supply: 5 ~ 36V DC, screw terminal Case: PC + ABS, V0 flame retardant grade Dimensions: L × W × H: 109.66 × 28 × 64.71 mm  2) Communication Ethernet: 10 / 100M auto-negotiation RJ45 connector WIFI: 802.11b/g/n compliant Serial port: RS485 interface (Anti-surge, Over-current protection)   3) Wireless  Frequency Band: 2.412 ~ 2.484 GHz Wireless network: Station / AP / AP+Station Mode Security mechanism : WPA-PSK / WPA2-PSK Encryption type: TKIP / AES Transmitting power: 802.11b: +19dBm (Max.@11Mbps). 802.11g: +18dBm (Max.@54Mbps). 802.11n: +17dBm (Max.@HT20, MCS7); +17dBm (Max.@HT40, MCS7).  Receiving sensitivity: 802.11b: -89dBm (@11Mbps). 802.11g: -81dBm (@54Mbps). 802.11n: -73dBm (@HT20, MCS7); -71dBm (@HT40, MCS7).   4) Serial  Baudrate: 300 ~ 460800 bps Parity bit: none, odd, even, mark, space Data bit:5 ~ 9 bits  5) Software Protocol: TCP / UDP / ARP / ICMP / DHCP / DNS / HTTP / MQTT Configuration: host, web browser, serial AT command Communication method: TCP/IP direct communication, VCOM Operating mode: Transparent transmission, serial command, HTTPD Client, Modbus TCP to Modbus RTU  User Manual: n9.cl/waveshare  Package Content  RS485 TO WIFI/ETH x1 Antenna x1

## Features

- Support 802.11b/g/n wireless standards. Support WAVESHARE-link. Support route and bridge modes Rich indicator LED: Power, link, RXD, TXD. Wide voltage DC 5~36V, support terminal power. Support custom heartbeat packet, distributing socket protocol, MODBUS polling function. Support timeout reset function, timing reset function. Support remote upgrade. Add hardware watch dog, makes more stable. Supports free framing and automatic framing on the serial port, for higher forwarding efficiency.
- Support websocket and realize the timing communication for serial port and web page. Support web page, serial/network AT command to conFigure parameters. Support one key (press the reload button for more than 5 seconds) to restore factory settings. Long distance communication: two serial server can transport for 150m (Test conditions: open line of sight, two WIFI serial servers self-networking, 57600 baud rate, no packet loss during transmission)
- Rail-mount Serial Server: Industrial Rail-mount Support, Easy to Install, Compact Size, Cost-effective. Support Transparent Transmission Mode: Supports TCP Server / TCP Client / UDP Server / UDP Client. Serial Command Mode: The user sends data to the server according to the protocol. Send data to different servers without restarting.
- Support HTTPD Client Mode: After the user has set the HTTP header through AT commands or web page, the module can send data to the HTTP server, or obtain data from the HTTP server. Modbus Gateway support: Support Modbus TCP and Modbus RTU interconversion mode. AT command mode: The user can query the current status of the module, or set related parameters, by sending AT commands.
- Support MQTT function: Devices can subscribe to other MQTT client messages, and can publish topic information to the server. Supports subscription of 6 messages and publication of 6 topics, wider range of use and more applicable scenarios. Users can view device-related information through terminal devices or cloud platforms.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BJL7QCS4 |
| Best Sellers Rank | #6,801 in Single Board Computers (Computers & Accessories) |
| Brand | waveshare |
| Compatible Devices | Various IoT devices, sensors, and industrial equipment |
| Connectivity Technology | Wi-Fi |
| Customer Reviews | 4.5 out of 5 stars 2 Reviews |
| Item Dimensions L x W x H | 4.32"L x 2.55"W x 1.1"H |
| Item Height | 14 millimeters |
| Manufacturer | Waveshare |
| Model Name | RB-Wav-541 |
| Operating System | Linux |
| Processor Count | 1 |
| RAM Memory Technology | LPDDR4X |
| Total Usb Ports | 2 |
| Wireless Compability | 802.11b, 802.11g, 802.11n |

## Product Details

- **Brand:** Waveshare
- **Model name:** RS485 TO WIFI/ETH
- **Connectivity technology:** Wi-Fi
- **Included components:** RS485 TO WIFI/ETH, Antenna
- **Operating system:** Linux

## Images

![Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc. - Image 1](https://m.media-amazon.com/images/I/61e9I1Me-SL.jpg)
![Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc. - Image 2](https://m.media-amazon.com/images/I/61X7M03kUyL.jpg)
![Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc. - Image 3](https://m.media-amazon.com/images/I/61NODecXM6L.jpg)
![Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc. - Image 4](https://m.media-amazon.com/images/I/71Pn8I8BaxL.jpg)
![Waveshare RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc. - Image 5](https://m.media-amazon.com/images/I/71EJ7yMYMRL.jpg)

## Frequently Bought Together

- RS485 to WiFi/Ethernet Module, Rail-Mount Serial Server, Modbus MQTT Gateway, Support 802.11b/g/n Wireless Standards, Support RS485 to WiFi, RS485 to Ethernet, Ethernet to WiFi, etc.
- waveshare Ethernet Industrial Serial Server RS485 to RJ45 Ethernet Module, TCP/IP to Serial, Support Rail-Mount/Modbus Gateway, TCP Server/TCP Client/UDP Mode/UDP Multicast Multi Communication Modes

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-24*