HD67C06-G43-E-VPN-B2 Industrial Modbus TCP Master / MQTT Broker with LTE, eSIM and VPN

HD67C06-G43-E-VPN-B2 – Modbus TCP Master and MQTT Broker with LTE, eSIM and VPN.

HD67C06-G43-E-VPN-B2 is an advanced industrial communication gateway that integrates Modbus TCP Master functionality with a fully embedded MQTT Broker. Designed for secure IIoT and SCADA architectures, it includes both LTE SIM, built-in eSIM and a VPN service, ensuring encrypted communication between automation networks, cloud platforms and remote supervisory systems.

With its robust hardware platform, the device offers long-term stability in harsh industrial conditions. Operating within a temperature range of −40°C to +85°C, with galvanic isolation and strong EMC immunity, the HD67C06-G43-E-VPN-B2 is ideal for applications that demand reliability, security and redundant connectivity. The compact Modulbox 4M DIN-rail housing ensures seamless installation in control panels or edge cabinets.

Key Features of the HD67C06-G43-E-VPN-B2

• Modbus TCP Master for polling and controlling industrial Ethernet devices.
• Integrated MQTT Broker supporting publish/subscribe messaging for IoT and cloud systems.
• Three communication interfaces: LAN, LTE SIM and embedded eSIM.
• VPN service providing secure, encrypted remote connectivity.
• Full MQTT configuration: topics, QoS, payloads, JSON formatting and update intervals.
• Wide power range: 8…24 V AC / 12…35 V DC.
• Operating temperature from −40°C to +85°C.
• Galvanic isolation between Ethernet and the power section.
• Status LEDs for operation, errors, MQTT and Modbus TCP communication.
• SW67C06 configuration software enabling complete device setup.

How the Converter Works

The device operates as a Modbus TCP Master, collecting and writing process data from industrial Ethernet devices such as drives, PLCs, controllers, analyzers or power meters. The integrated MQTT Broker converts these variables into structured MQTT topics that can be consumed by cloud platforms, SCADA dashboards, BMS systems or IoT applications.

With the addition of VPN encryption, all communication tunnels between remote installations and central systems remain protected from unauthorized access. This makes the HD67C06-G43-E-VPN-B2 a reliable core component in distributed automation networks, energy systems, building automation, environmental monitoring and industrial telemetry applications.

Ports and Connectivity

• 1× Ethernet RJ45 supporting 10/100 Base-T autosensing.
• SIM slot for LTE connectivity.
• Integrated eSIM enabling embedded mobile communication.
• 2-pin power connector (8…24 V AC / 12…35 V DC).
• SMA connector for LTE antenna.

Technical Specifications

• Modbus TCP: 10/100 Base-T Autosensing
• MQTT: 10/100 Base-T Autosensing
• Dimensions: 70 × 60 × 95 mm
• Weight: approx. 200 g
• Operating temperature: −40°C to +85°C
• Mounting: DIN Rail (Modulbox 4M)
• Software: SW67C06 – Download
• Order code: HD67C06-G43-E-VPN-B2

Applications

• Secure remote monitoring using LTE SIM/eSIM and VPN.
• Industrial IoT and SCADA integration with MQTT.
• Modbus TCP data acquisition for cloud analytics.
• Energy management, HVAC, BMS and automation systems.
• Environmental, water, infrastructure and utility monitoring.
• Distributed control systems requiring encrypted communication.