What is KNX?

KNX is a control system that was developed to allow products from various manufacturers to work seamlessly together. The system operates on a standardised bus cable with a common language, allowing different products to work together.

It controls all aspects of home and building control such as: lighting, heating, cooling and ventilation, blinds/ shutters, security and door communication systems, audio and video, and metering.

With KNX there are no more problems of isolated devices or systems not being able to talk to each other. It also means all home and building control functions can be controlled through the one central system without the need for additional control centres.

KNX can be installed in to new or existing developments, be it a new build or retrofit project, residential or commercial. With wired, wireless, IP and powerline communication mediums it is possible to use the system within any building type.

Benefits include;

  • Flexible
  • Simple to use
  • Daisy chain topology
  • Multiple manufacturer products work together
  • Talk to other control systems
  • Enables full building control
  • Low operating costs
  • Time saving

Linking Automation Systems

Due to its ability to talk to other systems, it is commonly used a backbone in linking together proprietary control systems, standardised controls such as: DALI, BACnet, Modbus and AV control systems such as AMX, Crestron or Control4.

Advantages of knx:

1. International Standard, therefore future proof

  • ISO/IEC Approved the KNX technology as the International Standard ISO/IEC 14543-3 in 2006.
  • CENELEC Approved the KNX technology as the European Standard EN 50090 in 2003.
  • CEN Approved the KNX technology as EN 13321-1 (as a mere reference to EN 50090) and EN1332-2 (KNXnet/IP) in 2006.
  • SAC Approved the KNX technology as the Chinese Standard GB/T 20965 in 2007.
  • ANSI/ASHRAE Approved the KNX technology as the US Standard ANSI/ASHRAE 135 in 2005.

In view of the above, KNX is the Worldwide STANDARD for Home and Building Control.

2. By product certification, KNX guarantees Interoperability & Interworking of products

The KNX certification process ensures that different products of different manufacturers used in different applications operate and communicate with each other. This ensures a high degree of flexibility in the extension and in the modification of installations. Product compliance is checked at neutral laboratories (third parties).

KNX is the only home and building control standard running global certification schemes for products, training centres (vocational and private institutions) and even for persons (electrical contractors, building designers).

3. KNX stands for high product quality

KNX Association requires a high level of production and quality control during all stages of the product life. Therefore all manufacturing members have to show compliance to ISO 9001 before they even can apply for a KNX product certification.

Besides the manufacturer compliance to ISO 9001, the products have to comply with the requirements of the European as well as International standard for Home and Building Electronic Systems. In case of doubt, KNX Association is even entitled to have certified products retested or can require from the manufacturer test reports underlying his declaration of hardware conformity.

4. A unique manufacturer independent Engineering

5. KNX can be used for all applications in home and building control

KNX can be used for all possible functions / applications in home and building control ranging from lighting, shutter control to security, heating, ventilation, air conditioning, monitoring, alarming, water control, energy management, metering as well as household appliances, audio and lots more.

KNX improves comfort and security and contributes heavily to energy savings and climate protection (up to 50% for lighting control and the same amount for heating applications).

KNX Display Interface

5. KNX can be used for all applications in home and building control

KNX can be used for all possible functions / applications in home and building control ranging from lighting, shutter control to security, heating, ventilation, air conditioning, monitoring, alarming, water control, energy management, metering as well as household appliances, audio and lots more.

KNX improves comfort and security and contributes heavily to energy savings and climate protection (up to 50% for lighting control and the same amount for heating applications).

6. KNX is fit for use in different kind of buildings

KNX can be used in both new as well as existing buildings. KNX installations can therefore be easily extended and adapted to new needs, with little time and financial investment (e.g. when new tenants move into a commercial building).

KNX can be installed in both small-size single family houses as well as large buildings (office, hotel, conference centres, hospitals, schools, department stores, warehouses, airports…).

7.KNX supports several communication media
Each communication medium can be used in combination with one or more configuration modes, allowing each manufacturer to choose the right combination for the targeted market segment and application.

  • Twisted pair (KNX TP): KNX is transmitted across a separate bus cable, hierarchically structure in lines and areas.
  • Power Line (KNX PL): KNX is transmitted on the existing mains network.
  • Radio frequency (KNX RF): KNX is transmitted via radio signals. Devices can be uni- or bidirectional.
  • IP/Ethernet (KNXnet/IP): This widespread communication medium can be used in conjunction with the KNXnet/IP Specifications, which allow the tunnelling or routing of KNX frames encapsulated in IP frames.

8.KNX can be coupled to other systems

Several KNX manufacturers offer gateways to other networks, i.e. to other building automation systems, telephone networks, multimedia networks, IP networks, etc. KNX systems can be mapped to BACnet objects (as documented in the international standard ISO 16484-5) or offers the possibility to interface with the DALI technology.

KNX Control Panel Examples
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