Industrial communication converter from RS232/RS485 to WiFi/Ethernet | 6-36VDC | Modbus/MQTT
Code: ES-ETH-BThis industrial-grade RS232/485 serial server is a versatile data collection and IoT network router (gateway), designed for use in industrial environments. It combines several functions in one device, including a serial server, Modbus, MQTT, and HTTPD.
The device supports various communication protocols and can convert from WiFi to Ethernet or Ethernet to WiFi. With its industrial metal casing, wide 6-36V power range, and options for wall and DIN rail mounting, this module is a reliable solution for industrial automation, IoT networks, security systems, and intelligent measurement systems.
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Technical Specifications: Power:
Voltage: DC 6-36V
Power connectors: 5.5mm DC socket or screw terminals
Communication Interfaces:Ethernet: 10/100M (auto-negotiation, RJ45 connector)
WiFi: 802.11 b/g/n, supports Station, AP, or AP+Station modes
RS232 and RS485: with ESD/EFT/shock protection
Wireless Specifications:Frequency range: 2.412 - 2.484 GHz
Security: WPA-PSK / WPA2-PSK
Encryption: TKIP / AES
Transmission Power:802.11b: +19 dBm (@11 Mbps)
802.11g: +18 dBm (@54 Mbps)
802.11n: +17 dBm (@HT20, MCS7)
Receiver Sensitivity:802.11b: -89 dBm (@11 Mbps)
802.11g: -81 dBm (@54 Mbps)
802.11n: -73 dBm (@HT20, MCS7)
Serial Communication Parameters:Data transfer rate (baudrate): 300 - 460800 bps
Parity bit: None, Odd, Even, Mark, Space
Data bits: 5-9 bits
Software:Supported network protocols: TCP, UDP, ARP, ICMP, DHCP, DNS, HTTP, MQTT
Configuration: Via computer, browser, or serial AT commands
Operating Modes:Transparent Transmission
Serial Command Mode
HTTPD Client
Modbus TCP to Modbus RTU
Mechanical Properties:Dimensions: 84 x 64 x 24 mm
Housing: Metal (industrial)
Mounting types: Wall mount or DIN rail mount
Environmental Conditions:Operating temperature: -40°C ~ 85°C
Humidity: 5 - 85% RH (non-condensing)
Key Features:Serial server – converts RS232/RS485 signals to Ethernet/WiFi
Modbus Gateway – connects Modbus RTU to Modbus TCP network
MQTT Gateway – serves as an industrial IoT network gateway
HTTPD client – sends serial data to an HTTP server
Wide power range – suitable for various industrial devices
High environmental resistance – metal housing, works from -40°C to 85°C
DIN rail or wall mounting
Applications:Industrial automation – connects PLC control systems to the network
IoT networks – connects to cloud servers using MQTT
Device monitoring – remote data collection from sensors or devices
Security systems – integration of security cameras or other RS485 devices
Network conversion – WiFi to Ethernet, serial to Ethernet/WiFi
Pros:Versatility – supports RS232, RS485, WiFi, Ethernet
Wide protocol support – TCP/IP, Modbus, MQTT, HTTP
Environmentally resistant – works from -40°C to 85°C
Wide power range – operates from 6V to 36V DC
Easy installation – DIN rail or wall mount
High protection level – protection from ESD, EFT, surges
Cons:May require network configuration – proper parameter setup required
No PoE support – requires separate power supply
No mobile app – management only via computer or web interface
This industrial serial server RS232/485 to WiFi and Ethernet is an extremely flexible and reliable solution for various industrial and IoT applications. Its versatility, high functionality, and environmental resistance ensure stable and efficient operation in both automation and remote monitoring systems.A perfect choice for industrial automation, IoT systems, Modbus networks, and data transmission over WiFi or Ethernet.
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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