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Rail-Mount Serial Server, RS485 to WIFI/Ethernet Module, Modbus MQTT Gateway


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Manufacturer Part Number:
₹3,060.92 inc. GST
₹2,594.00 ex. GST
₹3,060.92 inc. GST
₹2,594.00 ex. GST


This device is an RS485 data acquisition and IoT gateway specifically designed for industrial environments. It combines multiple functions into one unit, including a serial server, Modbus gateway, MQTT gateway, RS485 to HTTP client, and more. With RS485, Wi-Fi, and Ethernet ports, the module enables functionalities such as serial to Wi-Fi, serial to Ethernet, Ethernet to Wi-Fi, and so on. It supports a wide range of power supply (5-36V) through screw terminals. Its compact rail-mount V0 flame-retardant case design makes it easy to install. This device is well-suited for applications such as data acquisition, IoT gateway, safety and security IoT, and intelligent instrument monitoring.

  • Support 802.11b/g/n wireless standards.
  • Support WAVESHARE-link.
  • Support route and bridge modes.
  • Support RS485 to Wifi/ Ethernet communication.
  • Rich indicator LED: Power, link, RXD, TXD.
  • Wide voltage DC 5~36V, support terminal power.
  • Support transparent transmission mode, serial command mode, HTTPD Client (GET, PUT and POST), MODBUS, AT command mode.
  • Support three types of registration packets: MAC, WAVESHARE-Cloud, custom.
  • 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: openline of sight, two WIFIserial servers self-networking, 57600 baud rate, no packet loss during
  • Designed with guide rails for easy installation.

RS485 To WIFI/Ethernet Module

Rail-mount RS485 serial server | Modbus Gateway | MQTT Gateway

Primary Function

Support RS485 To WIFI, RS485 To Ethernet, Ethernet To WIFI, Etc.

Rail-Mount Serial Server

Industrial Rail-Mount Support, Easy To Install, Compact Size, Cost-Effective

Function Block Diagram

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

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

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

Multi Configuration Methods

Supports muliti configuration methods such as hosts, Web Browser and serial port Configuration

Socket Distribution Protocol
In the transparent transmission mode, the serial device can send data to the specified Socket link; the network data of each Socket is sent to the serial device through the serial port.

Hardware Protection
ESD Level 4 Static Protection, Level 3 Surge Protection, EFT Level 3 Electrical Fast Transient/Burst Protection.

Customized registration packets, heartbeat packets
The registration package is used to identify the device information to the server, so that the server can identify the device.

Interface Introduction

Outline Dimensions

Technical Specifications

Communication Interface:
RS485, screw terminal
Power Supply:
5 ~ 36V DC, screw terminal
PC + ABS, V0 flame retardant grade
L x W x H: 109.66 x 28 x 64.71 mm
10 / 100M auto-negotiation RJ45 connector
802.11b/g/n compliant
Serial Port:
RS485 interface (Anti-surge, Lightningproof, Over-current protection)
Frequency Band:
2.412 ~ 2.484 GHz
Wireless Network:
Station / AP / AP+Station Mode
Security Mechanism:
Encryption Type:
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)
300 ~ 460800 bps
Parity Bit:
none, odd, even, mark, space
Data Bit:
5 ~ 9 bits
Flow Control:
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

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.