HD67931-B2-433MHz-160 Industrial M-Bus Wireless to MQTT converter for 160 wired and 32 wireless devices

HD67931-B2-433MHz-160 – Industrial MBus Wireless to MQTT converter, master MBus up to 160 slaves, up to 32 MBus wireless slaves, housing type B (wide), DIN rail mount.

The HD67931-B2-433MHz-160 is an advanced industrial gateway that enables seamless integration between traditional M-Bus metering systems and modern MQTT servers. It supports up to 160 wired devices and up to 32 wireless devices communicating at 433 MHz. This makes the device ideal for large infrastructures where both wired and wireless communication are required. The 433 MHz frequency provides robust wireless communication with a good balance between range and reliability, even in environments with potential interference. By publishing data directly to an MQTT broker, the converter allows energy consumption and metering information to be shared across IoT platforms, SCADA systems, or Building Management Systems (BMS). Support for TLS/SSL encryption ensures that sensitive measurement data is transmitted securely. The gateway is designed for industrial use and features electrical isolation between Ethernet and M-Bus to guarantee protection against surges and disturbances.

This converter is compatible with M-Bus meters from well-known brands such as SIEMENS, Kamstrup, Maddalena, and Sontex. Once configured, it automatically publishes readings to the MQTT server, making the data instantly available for visualization dashboards, analytics software, or cloud IoT applications. Configuration is performed via the free SW67931 software, which allows the user to define MQTT parameters, M-Bus wired line settings, and wireless communication options. The power supply range of 18…35 V DC ensures flexibility in industrial environments, and the device can handle a peak consumption of 30 W at startup. Interfaces are industry-standard: RJ45 for Ethernet, SMA female connector for the antenna, and 2-way 5 mm terminal block for M-Bus. Network connectivity is supported via 10/100 Base-T with auto-sensing, ensuring quick integration into existing Ethernet infrastructures. This makes the HD67931-B2-433MHz-160 highly adaptable to a wide range of applications, from utilities and smart grids to building automation.

With an operating temperature range of -40°C to +85°C, the converter is suitable for both indoor and outdoor use in harsh environments. Its compact design (71 x 60 x 95 mm) and low weight (approx. 200 g) make it easy to install in space-constrained cabinets. Standard DIN rail mounting ensures compatibility with industrial panels. The unit is backed by a 24-month manufacturer’s warranty, guaranteeing long-term reliability. Advanced MQTT features, such as topic hierarchy and Quality of Service (QoS) levels, provide engineers with the ability to tailor communication to specific project needs. Using the SW67931 software, firmware updates can be applied, ensuring that the device remains up-to-date with the latest protocol enhancements and security patches. Because of its flexibility, the HD67931-B2-433MHz-160 is frequently used in projects requiring remote monitoring of thermal energy meters, water meters, and other consumption devices. Combined with IoT servers, it enables real-time monitoring and predictive maintenance strategies. This ensures not only efficient energy management but also a reduction in operational costs for industrial and commercial facilities.

HD67931-B2-433MHz-160 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.

They allow to monitor MBus meters (like SIEMENS, Kamstrup, Maddalena, Sontex, etc.). Converter is easy to configure thanks to free SW67931 software.

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
• Maximum power consumption at converter start-up: 30W
• 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
• Mechanical fixing: DIN Rail mount
• Software: SW67931
• ORDER CODE: HD67931-B2-433MHz-160

Configurator – Software SW67931 FREE DOWNLOAD

Manufacturer's warranty: 24 months

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