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

Industrial BACnet MSTP Master to MQTT Broker converter with LTE and eSIM.

The HD67C08-MSTP-G43-E-B2 is an industrial converter designed to integrate devices operating as BACnet MSTP Master over an RS485 network with modern MQTT-based IoT platforms. The device enables seamless data exchange between traditional building automation systems and BMS, SCADA or cloud-based environments.

The G43-E variant is equipped with an LTE module supporting both a physical SIM card and an integrated eSIM. This provides high communication availability and redundancy, making the converter ideal for distributed installations, technical facilities and locations without fixed Ethernet infrastructure.

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

Galvanic isolation between the Ethernet interface and the power supply improves system reliability and protects the device against electrical disturbances commonly present in industrial environments. The compact B2 Modulbox enclosure allows fast 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-E-B2 is well suited 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 block.
• Ethernet, LTE, SIM and eSIM 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 communication, data mapping and firmware updates.

Technical Specifications

• Protocols: BACnet MSTP Master, MQTT Broker
• Ports: 1× RS485, 1× Ethernet RJ45, SIM slot, integrated eSIM
• 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-E-B2

The HD67C08-MSTP-G43-E-B2 is an optimal solution wherever integration of legacy BACnet MSTP networks with modern MQTT-based IoT platforms is required, while also providing redundant and remote LTE communication through SIM and eSIM support.

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