en M-Bus

MQTT to M-Bus Converters – Efficient Integration of M-Bus Meters and IoT

An MQTT to M-Bus converter enables bidirectional data exchange between M-Bus meters and IoT systems based on the MQTT protocol. With these devices, measurement data from electricity, water, gas, or heat meters can be published in real time to MQTT servers, such as SCADA platforms, BMS, or cloud applications. This solution provides full automation of monitoring and billing processes in modern facilities.

Devices in this category, such as the HD67931-B2 series, support from 20 up to 250 M-Bus devices depending on the model (e.g., HD67931-B2-20, HD67931-B2-80, HD67931-B2-250). This makes them suitable both for small-scale installations and for large industrial systems or Smart City infrastructures. Their flexibility and scalable architecture make them a reliable choice for professional IoT integration.

Secure data transmission

All MQTT to M-Bus converters support TLS/SSL encryption, ensuring secure and reliable communication. This functionality makes them ideal for critical applications, such as smart grids, heating and water distribution systems, or other infrastructures where data protection and integrity are key requirements.

Main features of the converters

• Support for 20 to 250 M-Bus devices depending on the version
• Real-time data publishing to MQTT servers (SCADA, BMS, cloud)
• Compatibility with leading meters from Siemens, Kamstrup, Maddalena, Sontex, etc.
• TLS/SSL encryption for secure communication
• DIN rail mounting, industrial type B (wide) housing
• Wide power supply range 18…35V DC and 15…21V AC
• Operating temperature from -40°C to +70°C – suitable for industrial environments
• Easy setup via free configuration software

Applications of MQTT to M-Bus converters

MQTT to M-Bus converters are widely used in building automation, smart metering, smart grid projects, and Smart City solutions. They allow centralized real-time monitoring of meters and measuring devices, eliminating the need for manual on-site readings. This approach reduces operational costs and significantly improves resource management efficiency.

With their versatility and high compatibility, MQTT to M-Bus converters are an essential tool for IoT system integrators, energy companies, and utility providers seeking scalable and secure solutions for infrastructure management and digital transformation.