The M-BUS (Meter BUS) is a fieldbus for consumption data acquisition (electricity meter, heat meter, gas meter, water meter and measured values ??from various sensors). The development started in 1992 and is mainly forced by the measuring device manufacturers. The M-BUS has developed into a European standard. As an Open Metering System (OMS) the specification of the M-BUS is being pushed ahead in an OMS Group interest group. The data protocol is designed for the acquisition of measured values. In addition, the data protocol is optimized so that many measuring points, and thus large amounts of data, can be sent, saved and processed. This optimization makes it possible to make the devices for data acquisition and measured value transmission more cost-effective. In the master-slave principle, the data from the measuring points are recorded and compressed over long distances by cable or radio. In this respect, the M-BUS is mostly integrated as a subsystem in the building automation. For this reason, some other bus systems already have pre-configured interfaces. Of course there is also an evaluation system, visualization of the data (consumption indicators) based on the M-BUS. Many of today's smart home devices have already integrated various measuring points, e.g. energy consumption, power, current, voltage, temperature and much more so that large amounts of data can be reached, which a bus system can no longer reasonably process (data flooding) without having created special algorithms.