Industrial KNX TP to MQTT Broker converter with LTE, eSIM and VPN HD67C18-G43-E-VPN-B2

Industrial KNX TP to MQTT Broker converter with LTE, eSIM and VPN HD67C18-G43-E-VPN-B2

HD67C18-G43-E-VPN-B2 is an advanced industrial communication converter designed for secure integration of KNX TP building automation systems with modern IoT platforms, BMS solutions and cloud services based on the MQTT Broker architecture. The device enables stable and encrypted data exchange between the KNX fieldbus, Ethernet networks and cellular LTE infrastructure.

The G43-E-VPN version combines LAN and LTE connectivity with support for both a physical SIM card and an embedded eSIM, together with an integrated VPN service. This ensures a high level of data security, flexibility in selecting mobile network operators and secure remote access to KNX installations, even in distributed or hard-to-reach locations.

KNX TP communication is handled via a dedicated KNX bus connector operating at 9600 bps. MQTT data transmission is performed through RJ45 Ethernet with support for 10/100 Base-T Autosensing as well as through the LTE cellular network. Galvanic isolation between Ethernet and the power supply increases system immunity to electrical disturbances and improves operational safety in industrial and commercial environments.

The device is housed in a compact B2 Modulbox enclosure designed for DIN 35 mm rail mounting. It is suitable for operation in harsh environmental conditions, with an operating temperature range from -40°C to +85°C. Compact dimensions of 70 × 60 × 95 mm allow installation in space-constrained control cabinets.

Key features

• Secure integration of KNX TP systems with MQTT Broker.
• Ethernet, LTE, SIM and eSIM connectivity.
• Integrated VPN service for encrypted communication.
• Secure remote access to KNX installations.
• KNX TP communication at 9600 bps.
• Support for 10/100 Base-T Autosensing for MQTT.
• Mapping of KNX group objects to MQTT topics.
• Galvanic isolation between Ethernet and power supply.
• Industrial enclosure for DIN rail mounting.

Configuration and commissioning are performed using dedicated software SW67C18 , which allows configuration of KNX parameters, MQTT settings, VPN connections and firmware updates.

Technical specifications

• Protocols: KNX TP, MQTT Broker
• Service: VPN
• Ports: 1× KNX, 1× Ethernet RJ45, SIM, eSIM
• KNX data rate: 9600 bps
• MQTT data rate: 10/100 Base-T Autosensing
• Power supply: 8…24V AC or 12…35V DC
• Power connector: 2-way 5 mm terminal block
• Operating temperature: -40°C to +85°C
• Dimensions: 70 × 60 × 95 mm (D × W × H)
• Weight: approx. 200 g
• Mounting: DIN rail
• Software: SW67C18
• Order code: HD67C18-G43-E-VPN-B2

HD67C18-G43-E-VPN-B2 is a professional solution for projects requiring secure integration of KNX installations with modern MQTT-based IoT architectures, while leveraging LTE connectivity, eSIM flexibility and encrypted VPN communication.

Need technical support or assistance with device selection? Contact Consteel Electronics .