HD67C08-MSTP-G43-B2 – BACnet MSTP Master to MQTT Broker converter with LTE

Industrial BACnet MSTP Master to MQTT Broker converter with LTE.

The HD67C08-MSTP-G43-B2 is an industrial converter designed to integrate devices operating as BACnet MSTP Master on an RS485 network with modern MQTT-based IoT platforms. The device enables reliable data transfer from BACnet MSTP networks to BMS, SCADA systems and cloud environments.

The G43 version is equipped with an LTE module and a SIM card slot, allowing secure remote communication in locations without fixed Ethernet infrastructure. This makes the converter an ideal solution for distributed building automation systems, HVAC installations, technical facilities and energy monitoring applications.

BACnet MSTP communication is handled via an RS485 interface terminated with a 3-way 5 mm terminal block, supporting data rates up to 115200 bps. On the network side, the converter operates as an MQTT Broker with 10/100 Base-T Autosensing communication through the RJ45 Ethernet port and LTE connectivity.

Galvanic isolation between the Ethernet interface and the power supply increases system reliability and protects the device against electrical disturbances commonly present in industrial environments. The compact B2 Modulbox enclosure allows quick installation on a DIN 35 mm rail.

With compact dimensions of 70 × 60 × 95 mm and a wide operating temperature range from -40°C to +85°C, the HD67C08-MSTP-G43-B2 is suitable for harsh industrial conditions and space-limited control cabinets.

Key Features

• Integration of BACnet MSTP Master with MQTT Broker.
• RS485 interface with 5 mm screw terminal.
• Ethernet and LTE (SIM) connectivity.
• BACnet MSTP data rates up to 115200 bps.
• MQTT communication with 10/100 Mbps Autosensing.
• Galvanic isolation between Ethernet and power supply.
• Industrial enclosure with DIN rail mounting.

Device configuration is performed using the dedicated SW67C08 software , which allows configuration of BACnet MSTP parameters, MQTT settings, data mapping and firmware updates.

Technical Specifications

• Protocols: BACnet MSTP Master, MQTT Broker
• Ports: 1× RS485, 1× Ethernet RJ45, LTE SIM slot
• BACnet data rate: up to 115200 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: SW67C08
• Order Code: HD67C08-MSTP-G43-B2

The HD67C08-MSTP-G43-B2 is an optimal solution wherever integration of legacy BACnet MSTP networks with modern MQTT-based IoT platforms is required, while also providing LTE connectivity for remote and distributed installations.

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