HD67C05-5-G43-E-VPN-B2 industrial Modbus Slave to MQTT Broker converter with LTE, eSIM and VPN

HD67C05-5-G43-E-VPN-B2 – Modbus Slave / MQTT Broker with LTE, eSIM and VPN Service

The HD67C05-5-G43-E-VPN-B2 is a high-performance industrial converter that combines Modbus Slave communication with a complete MQTT Broker engine. Equipped with LTE SIM, integrated eSIM and a secure VPN service, the device ensures safe, reliable and continuous data transmission in distributed automation, telemetry and IoT environments.

With Ethernet LAN, LTE SIM and a built-in eSIM module, the converter provides full connectivity redundancy for remote sites or installations without wired infrastructure. The integrated VPN feature creates encrypted tunnels for secure access to SCADA systems, cloud platforms and remote control applications, ensuring maximum data protection and operational reliability.

Key Features of the HD67C05-5-G43-E-VPN-B2

• Modbus Slave RS485 with speeds up to 115200 bps.
• MQTT Broker supporting publishing and subscribing of industrial process data.
• Integrated VPN service for secure, encrypted communication.
• Dual mobile connectivity: physical LTE SIM and embedded eSIM.
• Ethernet LAN 10/100 Mbps as a primary or redundant network path.
• Galvanic isolation between Ethernet and power supply for higher safety.
• Wide power supply range 8…24 V AC and 12…35 V DC.
• Operating temperature from -40°C to +85°C for harsh industrial conditions.
• DIN-Rail housing type B with industrial terminal block connectors.
• Configuration via SW67C05 – full control over MQTT, Modbus, LTE, eSIM and VPN parameters.

How the Converter Operates

The device operates as a Modbus Slave, receiving data from RS485 devices and mapping values to MQTT structures. It allows publishing process values to cloud platforms, SCADA systems or IoT applications, and supports configurable topic naming, publishing intervals, JSON formatting and quality of service settings.

The integrated VPN service enables secure remote access to field devices and encrypted data exchange across public networks. This makes the HD67C05-5-G43-E-VPN-B2 ideal for remote monitoring, critical infrastructure systems and industrial environments where cybersecurity is essential.

Ports and Connectivity

• 1× RS485 Modbus Slave – 3-pin terminal block.
• 1× Ethernet RJ45 – 10/100 Base-T autosensing.
• 1× LTE SIM slot for cellular connectivity.
• 1× integrated eSIM module for embedded mobile communication.
• 2-pin power connector supporting AC and DC input ranges.
• Status LEDs for Modbus, MQTT, VPN, device state and errors.

Technical Specifications

• Modbus Slave: up to 115200 bps
• MQTT: 10/100 Base-T autosensing
• Operating temperature: -40°C to +85°C
• Dimensions: 70 × 60 × 95 mm
• Weight: approx. 200 g
• Mounting: DIN-Rail 35 mm
• Software: SW67C05
• Order code: HD67C05-5-G43-E-VPN-B2

Applications

• Secure industrial IoT communication with VPN protection.
• Remote installations using LTE SIM or eSIM communication.
• Integration of Modbus Slave devices with cloud platforms.
• SCADA and BMS connectivity over MQTT.
• Outdoor infrastructure, energy systems and telemetry.
• Predictive maintenance and real-time data acquisition.

Software

The device is configured using the dedicated SW67C05 software package, which provides complete control over all communication parameters. Download the software below:

Download SW67C05