Industrial Grade Serial Server RS232/485 To WiFi and Ethernet, Modbus Gateway, MQTT Gateway, Metal Case

$29.99 - $33.99

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Industrial Grade Serial Server RS232/485 To WiFi and Ethernet, Modbus Gateway, MQTT Gateway, Metal Case, Wail-mount And Rail-mount Support, Optional PoE Function
Features at a glance

This is an RS232/485 device data acquisitor / IoT gateway designed for industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, serial port to HTTPD Client, etc. With RS232, RS485, WIFI and Ethernet interfaces, the module can realize functions such as serial port to WIFI, serial port to Ethernet, Ethernet to WIFI and so on. Onboard multiple power supply interfaces, supports 6~36V wide range power supply, and PoE function optional. Industrial grade metal case design, supports wall-mount and rail-mount installations, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring...

Version Options

RS232/485 TO WIFI ETH (B)
RJ45 network port

RJ45 network port with PoE support

Product UART-WIFI232-B2 RS485 TO WIFI/ETH RS232/485 TO WIFI ETH (B) RS232/485 TO WIFI POE ETH (B)
Product Description Embedded module Industrial rail-mount module with plastic case Industrial rail-mount/wall-mount module with metal case, PoE function optional
Power supply DC 3.3V (±5%) DC 5~36V DC 6~36V DC 6~36V / PoE port
Power supply method Pin header Screw terminal DC 5.5 power port, screw terminal DC 5.5 power port, screw terminal, or PoE port
(L × W × H)
25.00×40.00×8.00mm 109.66×28.00×64.71mm 84.00×64.00×24.00mm
Ethernet 10 / 100M auto-negotiation (Connection via pin header) 10 / 100M auto-negotiation RJ45 connector
WIFI 802.11b/g/n compliant
Serial port UART RS485 (ESD/EFT/surge protection) RS232 (ESD/EFT)
RS485 (ESD/EFT/surge protection)
Wireless specification
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)
Serial specification
Baudrate 300 ~ 460800 bps
Parity bit none, odd, even, mark, space
Data bit 5 ~ 9 bits
Flow control RTS/CTS N/A
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
Environment requirement
Operating temperature -40℃ ~ 85℃
Humidity range 5% ~ 95% relative humidity

Primary function

Support RS232/485 to WIFI and Ethernet, Ethernet to WIFI, etc.

Two Different Interfaces

Onboard RS232 / 485 Interfaces, Suitable For More Application Scenarios

Ethernet Port and WiFi To RS232 / 485

The Ethernet port and WiFi can send data to the two serial ports at the same time

RS232 / 485 To Ethernet Port and WiFi

Only one of the RS232 and RS485 can send data to the Ethernet port and WiFi at the same time

Multi Power Supply Methods

Support PoE Ethernet port power supply*, Suitable for IEEE 802.3af PoE standard
Support Screw Terminal and DC 5.5 Power Port for Power Supply, DC 6~36V
Wide Voltage Range Input

* This function is only available on the PoE version

Industrial Grade Serial Server

Industrial aluminum alloy case, wall-mount and rail-mount support
small in size, easy to install, and cost-effective

Function Block Diagram
Support transparent transmission mode

Support TCP Server, TCP Client, UDP Server, UDP Client

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.

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

Users send data to servers according to the protocol and can send data to different servers without restarting

Support Modbus TCP And Modbus RTU Interconversion Mode

Support multi wireless networking methods

Support AP mode, STA mode, and AP+STA mode

Support multi wired networking methods

Support APLAN, APWAN, Router, and Bridge mode


Multi Configuration Methods

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

AT Command Mode

The user can query the current status of the module or set related parameters by sending AT commands

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

Power supply anti-reverse, communication interface ESD and Surge Protection, EFT 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
Product show

* for reference only, please refer to the Package Content for the detailed part list

Outline dimensions
Support Batch Customization

Support software and hardware customization
Including hardware interface, LOGO, label, case and web page, etc.

Quick Overview

  • Comes with a WiFi antenna by default, you can choose the outdoor WiFi antenna according to your needs
  • The power supply is not included, it is recommended to use with a 12V Power Adapter

RS232/485 TO WIFI ETH (B)

  1. RS232/485 TO WIFI ETH (B) x1
  2. 2.4G WiFi antenna x1
  3. Rail-mount buckle x1
  4. Screwdriver x1
  5. Screws pack x1


  1. RS232/485 TO WIFI POE ETH (B) x1
  2. 2.4G WiFi antenna x1
  3. Rail-mount buckle x1
  4. Screwdriver x1
  5. Screws pack x1