METR provides physical and virtual infrastructures that enable new business models and applications in the field of smart building automation. Main product is a local IoT-network -hardware, software and cloud infrastructure- for tenement buildings, which integrates tech-solutions of different IoT protocols into an open, central system. By doing this, METR enables the interoperability of different technological systems in a building. Landlords have an open door to the digitalisation of their processes and can offer affordable new services to their tenants.