HD67931-B2-433MHz-20 Wireless & Wired M-Bus to MQTT Gateway, 20 Devices

Industrial MBus Wireless to MQTT converter, master MBus up to 20 slaves, housing type B (wide), DIN rail mount.

HD67931-B2-433MHz-20 allows to publish the data read from MBus meters into a MQTT Server. These gateways allow a fast and easy access to the IoT world and they are compatible with IoT Servers that support MQTT protocol. The MQTT communication can be encrypted using TLS / SSL protocols, ensuring a secure communication. This gateway supports up to 20 M-Bus slave devices through both wired M-Bus Master and Wireless M-Bus interfaces operating at 433 MHz. The dual-interface design enables integration of existing wired metering networks with modern wireless systems, significantly simplifying deployment. The operating temperature range from -40°C to +85°C and 18…35 V DC power supply range allow use in demanding environments. The wide type B housing and DIN rail mounting ensure quick installation in industrial cabinets. Galvanic isolation between Ethernet and M-Bus provides robust protection against electrical disturbances and improves overall system reliability.

They allow to monitor MBus meters (like SIEMENS, Kamstrup, Maddalena, Sontex, etc.). Converter is easy to configure thanks to free SW67931 software. With the ability to handle both Wireless M-Bus (S1 & T1 communication) and Wired M-Bus Master protocols, the device is ideal for mixed infrastructure projects. Configuration via the SW67931 tool enables defining MQTT server settings, adjusting communication parameters, and mapping M-Bus variables for publication. The SMA female connector allows for the use of external high-gain antennas to improve wireless range, while the 2-way 5mm terminal block ensures secure wired connections. This flexibility makes it suitable for smart metering networks, district heating systems, water and energy distribution, and smart city applications. High reliability, simple configuration, and secure data transfer make it a valuable component in modern IoT ecosystems.

Configuration:

Thanks to the SW67931 software on your PC you can:

• Define the parameters of MQTT line
• Define the parameters of MBus line
• Define the parameters of MBus Wireless line
• Define which MBus variables are sent to MQTT Server
• Update the device

Characteristics:

• Electrical isolation between Ethernet and MBus
• Mountable on 35mm Rail DIN
• Wide power supply input range: 18...35V DC

Specifications:

• Ports: 1x Ethernet, 1x MBus Wireless; 1x MBus
• Ethernet protocol: MQTT
• MBus Wireless protocol: MBus Wireless, S1&T1 communication
• MBus protocol: MBus Master
• MQTT connector: RJ45
• MBus Wireless connector: SMA Female Antenna
• MBus connector: 2way 5mm terminal block
• MBus Wireless frequency: 433 MHz
• Data Rates MQTT: 10/100 Base-T with autosensing
• Data Rates MBus: Up to 38400 bit/s
• Power supply: 18...35V DC
• Power supply connector: 2way 5mm terminal block
• Operating temperature: -40°C/+85°C (-40°F/+185°F)
• Dimensions: 71 mm x 60 mm x 95 mm (DxWxH)
• Weight: 200g approx
• Maximum power consumption at converter start-up: 30W
• Mechanical fixing: DIN Rail mount
• Software: SW67931
• ORDER CODE: HD67931-B2-433MHz-20

Configurator – Software SW67931 FREE DOWNLOAD

Manufacturer's warranty: 24 months

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