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

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

HD67C18-G43-E-B2 is an industrial communication converter designed to integrate KNX TP building automation systems with modern IoT platforms, BMS solutions and cloud infrastructures using the MQTT Broker communication architecture. The device enables reliable data exchange between the KNX fieldbus and Ethernet as well as cellular LTE networks.

The G43-E version provides combined LAN and LTE connectivity with support for both a physical SIM card and an embedded eSIM, ensuring high communication availability and flexibility in selecting mobile network operators. This makes the converter particularly suitable for distributed buildings, retrofit KNX installations and applications requiring secure remote access to automation data.

KNX TP communication is handled via a dedicated KNX bus connector with a data rate of 9600 bps, while MQTT communication is performed through RJ45 Ethernet supporting 10/100 Base-T Autosensing and via the LTE cellular network. Galvanic isolation between Ethernet and the power supply increases system reliability and protects connected equipment in electrically noisy industrial and building automation environments.

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

Key features

• Integration of KNX TP systems with MQTT Broker.
• Ethernet, LTE, SIM and eSIM connectivity.
• Reliable data transmission for IoT and BMS applications.
• 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.

Device configuration and commissioning are performed using dedicated software SW67C18 , which allows configuration of KNX parameters, MQTT settings, object mapping and firmware updates.

Technical specifications

• Protocols: KNX TP, MQTT Broker
• 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-B2

HD67C18-G43-E-B2 is a flexible and reliable solution for integrating KNX-based building automation systems with modern MQTT-driven IoT architectures, especially in applications requiring LTE connectivity and eSIM support.

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