What is KNX?

More comfort, more safety, more saving of energy: The demand for building management systems is continuously rising.

Whether in a one-family house or in an office complex: The demand for comfort and versatility in the management of air conditioning, lighting and access control is growing. At the same time, the efficient use of energy is becoming increasingly important. A higher level of comfort and safety and security with a concurrent lower energy consumption can only be reached, however, by the smart control and monitoring of all products involved. Admittedly, this also means more cables that connect sensors and controllers with the centralised control and monitoring stations. These cable loads lead to increased planning and installation expenditure, higher fire risks and rapidly rising costs.

The best answer: KNX – the only open standard for home and building automation in the world

To forward the control information to all components of the building automation, you need a system that circumvents the problems of isolated solutions: It must ensure that all components communicate in one language. In short, a system like the KNX BUS is needed that operates independently of the manufacturer and the application. This standard is based on over 24 years of experience in this market. The devices are able to exchange information via the KNX medium to which all devices are connected (via twisted two-wire lines, radio, 230 V network or IP/Ethernet). BUS devices can either be sensors or actuators needed for the control of building automation, for example: Lighting, shading / blind systems, security systems, energy management, heating, ventilation and air conditioning, alarm and monitoring systems, interfaces to service and building monitoring, remote control, metering, audio and video controls, household appliances, etc. All these functions can be controlled by a uniform system, monitored and protected by alarms without additional control units being necessary.

KNX – the open standard


KNX is recognised as an international standard (ISO/IEC 14543-3), as a European standard (CENELEC EN 50090 and CEN EN 13321-1) as well as a Chinese standard (GB/T 20965).


KNX is therefore future-proof. KNX products from different manufacturers can be combined – the KNX logo guarantees interconnectivity and interoperability. KNX – the only open standard for the control of commercial and residential buildings in the world.

KNX offers not only solutions and options but, most importantly, perspectives. The system grows with the user and his requirements.

You'll find further information here.