HD67C04-5-G43-E-B2 Modbus Master and MQTT Broker with LAN, LTE SIM and eSIM

HD67C04-5-G43-E-B2 – Industrial Modbus Master and MQTT Broker Converter with LAN, LTE SIM and eSIM.

The HD67C04-5-G43-E-B2 is a powerful industrial protocol converter that combines Modbus RTU communication with modern MQTT technology, enhanced with both LTE SIM and integrated eSIM for maximum communication redundancy. Engineered in a robust type B housing with DIN rail mounting, this converter is designed for demanding automation, telemetry and industrial IoT applications where reliable and continuous data transfer is essential.

Download software (SW67C04):
Click here to download the configuration software

Operating as a Modbus Master and a built-in MQTT Broker, the device enables seamless data collection from RS485 field equipment and efficient distribution to SCADA, cloud platforms and remote monitoring systems. With dual mobile connectivity (SIM + eSIM), the HD67C04-5-G43-E-B2 provides exceptional reliability for installations located in remote or infrastructure-limited environments.

The converter supports a wide temperature range from -40°C to +85°C and flexible AC/DC power supply from 8…24 V AC or 12…35 V DC, ensuring dependable operation in industrial and outdoor conditions.

Key Features and Advantages

• Modbus Master (RS485) for controlling and polling industrial field devices.
• Integrated MQTT Broker for local publish/subscribe communication without external servers.
• LAN + LTE SIM + eSIM connectivity for maximum communication availability.
• Embedded eSIM enabling immediate activation with compatible cellular services.
• Complete MQTT configuration including topics, JSON payloads, QoS and publication rules.
• Galvanic isolation for Ethernet and power supply protection.
• Industrial type B housing with DIN rail mounting.
• Wide temperature range suitable for harsh environments.

How the HD67C04-5-G43-E-B2 Works

Working as a Modbus Master, the converter polls data from RS485 devices such as meters, PLCs, HVAC modules and industrial sensors. The collected values are converted into MQTT structures and distributed through the internal MQTT Broker to cloud platforms, IoT dashboards and SCADA systems. It also supports writing MQTT values back to Modbus registers, enabling true bidirectional communication.

The combination of LTE SIM and eSIM provides full redundancy and ensures stable data transfer even when wired connections are unavailable. This makes the device ideal for energy systems, telemetry, remote sites and mobile applications.

Ports and Connectivity

• 1× RS485 Modbus Master – 3-way screw terminal (5 mm).
• 1× Ethernet RJ45 – 10/100 Base-T autosensing.
• LTE SIM slot and integrated eSIM for cellular connectivity.
• Power connector – 2-way screw terminal (5 mm).

Technical Specifications

• Modbus Master speed: up to 115200 bps
• MQTT Ethernet: 10/100 Base-T autosensing
• Power supply: 8…24 V AC or 12…35 V DC
• Operating temperature: -40°C to +85°C
• Dimensions: 70 × 60 × 95 mm
• Weight: approx. 200 g
• Mounting: DIN rail 35 mm
• Software: SW67C04
• Order code: HD67C04-5-G43-E-B2

Applications

• Modbus RTU integration with IoT and cloud systems.
• Energy monitoring and telemetry with redundant LTE/eSIM connectivity.
• HVAC, BMS and industrial automation systems.
• SCADA and remote monitoring in distributed installations.
• Mobile and off-grid infrastructure requiring high availability.

Technical Support

Our team provides complete assistance with Modbus configuration, MQTT topic mapping, LTE and eSIM setup and integration with supervisory systems. We can prepare a ready-to-deploy configuration tailored to your application.