HD67C28-G43-E-B2 OPC UA Client to MQTT Broker converter with LAN, LTE Micro-SIM, and eSIM

HD67C28-G43-E-B2 – industrial OPC UA Client / MQTT Broker converter, housing type B, DIN rail mounting, LAN and LTE connectivity (Micro-SIM + internal eSIM), fixed screw terminal block connectors.

HD67C28-G43-E-B2 is an industrial communication converter designed to integrate data sources available via OPC UA with systems that use MQTT. The device operates as an OPC UA Client, so it can read variables from OPC UA Servers on the plant network and then deliver them to higher-level applications, IoT platforms and analytics systems through an embedded MQTT Broker.

The G43 version is designed for distributed deployments where mobile connectivity matters. This E variant adds an internal eSIM alongside the Micro-SIM slot, giving you more flexibility when selecting LTE connectivity for remote sites. It is a practical option for outdoor installations, temporary sites, containerized systems and projects where fast commissioning and stable mobile communication are important.

The converter uses the Ethernet RJ45 port for device programming as well as for MQTT and OPC UA communication. The interface provides one MAC Address for MQTT and one for OPC UA, which helps keep network diagnostics and traffic identification clear. For LTE transmission the device uses a cellular module and an SMA Female antenna connector (antenna with SMA Male).

The device provides:

• Electrical isolation between Ethernet and Power Supply
• Wide operating temperature range -40°C to +85°C
• Wide power supply range: 8…24V AC / 12…35V DC
• 35 mm DIN rail mounting
• Industrial enclosure Modulbox 4M, type B with fixed screw terminal connectors

These parameters ensure reliable operation in demanding industrial environments.

Configuration:

Model HD67C28-G43-E-B2 is configured using dedicated software SW67C28. With it you can:

• Define the parameters of the MQTT Broker
• Define the parameters of the OPC UA Client connection (server address, session, variables to read)
• Create the list of allowed MQTT Clients and manage access rules
• Manage published and subscribed topics and link topics to OPC UA data
• Set LTE parameters (for example APN and SIM PIN) for Micro-SIM and eSIM connectivity
• Update the device

Product features:

• 1x Ethernet RJ45 (programming, MQTT and OPC UA)
• LTE connectivity: Micro-SIM and internal eSIM
• Antenna connector SMA Female (antenna with SMA Male)
• OPC UA Client functionality
• Embedded MQTT Broker
• Data rates: 10/100 Base-T Autosensing
• 4 status LEDs: Device State (green), OPC UA comm. (yellow), MQTT Broker comm. (yellow), Error State (yellow)
• Recovery mode activated by a hardware button

Technical specification:

• OPC UA protocol: OPC UA Client
• Ethernet + LTE protocol: MQTT Broker
• Ports: 1x Ethernet; SIM Card (Micro-SIM); eSIM
• OPC UA connector: RJ45
• MQTT connector: RJ45 + SIM
• Data Rates OPC UA: 10/100 Base-T Autosensing
• Data Rates MQTT: 10/100 Base-T Autosensing
• Power supply: 8…24V AC / 12…35V DC
• Power supply connector: 2-way 5 mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 70 x 60 x 95 mm (D x W x H)
• Weight: approx. 200 g
• Mechanical fixing: DIN rail mounting
• Software: SW67C28
• ORDER CODE: HD67C28-G43-E-B2

Software SW67C28 for HD67C28-G43-E-B2 – DOWNLOAD

Manufacturer warranty: 12 months

HD67C28-G43-E-B2 is used in projects where you need to expose OPC UA data to applications consuming MQTT topics, while also maintaining communication outside the local network thanks to LTE. The additional eSIM increases flexibility in carrier selection and simplifies deployments where SIM logistics or long-term availability matter.

For more details and technical support, please visit our contact page.