HD67931-B2-433MHz-0 Wireless M-Bus to MQTT Gateway for 32 Devices, 433 MHz

Industrial MBus Wireless to MQTT converter, up to 32 MBus Wireless slaves, housing type B (wide), DIN rail mount.

HD67931-B2-433MHz-0 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 device supports up to 32 Wireless M-Bus slave devices operating at 433 MHz, offering stable and long-distance communication performance. The wide operating temperature range from -40°C to +85°C and power supply flexibility of 18…35V DC make it ideal for both indoor and outdoor applications. Its DIN rail mounting and type B wide housing ensure simple integration into existing control panels. Designed for industrial environments, the converter features galvanic isolation between Ethernet and M-Bus to improve system reliability and safety. By enabling MQTT communication with TLS/SSL encryption, it becomes a secure and efficient bridge for smart metering, building automation, and remote monitoring systems.

They allow to monitor MBus meters (like SIEMENS, Kamstrup, Maddalena, Sontex, etc.). Converter is easy to configure thanks to free SW67931 software. The device’s compatibility with different meter brands allows integration in mixed-equipment environments without requiring multiple gateway types. Using the SW67931 configuration tool, system integrators can set up MQTT server parameters, define Wireless M-Bus line characteristics, and map M-Bus variables for publishing. The inclusion of an SMA female antenna connector enables the use of external antennas for extended communication range. This makes the gateway highly versatile for smart city projects, energy monitoring, water and heat distribution networks, and industrial automation applications. Fast firmware updates and stable operation in high-interference radio environments further enhance its reliability.

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
• Ethernet protocol: MQTT
• MBus Wireless protocol: MBus Wireless, N1&N2 communication
• MQTT connector: RJ45
• MBus Wireless connector: SMA Female Antenna
• MBus Wireless frequency: 433 MHz
• Data Rates MQTT: 10/100 Base-T with autosensing
• 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)
• Maximum power consumption at converter start-up: 30W
• Weight: 200g approx
• Mechanical fixing: DIN Rail mount
• Software: SW67931
• ORDER CODE: HD67931-B2-433MHz-0

Configurator – Software SW67931 FREE DOWNLOAD

Manufacturer's warranty: 24 months

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