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Certification of products

In order to establish the KNX Trademark as a token for quality and interoperability of home and building system engineering products (based on the KNX standard), KNX Association runs its certification scheme for products.


If you, as a member of KNX Association wish to label a developed KNX product with the KNX trademark, shall prove compliance to the following requirements:

  • Quality system according to ISO 9001.
  • European standard EN 50090-2-2 (covering such aspects as EMC, electrical safety, environmental conditions, of bus products) and an appropriate product standard. Compliance can be shown to KNX Association by the submission of a CE declaration.
  • Volume 3 and Volume 6 of the KNX Specifications, the former being a toolbox of the KNX protocol features, the latter listing the allowed profiles of the KNX stack based on the toolbox as mentioned before.
  • KNX Interworking requirements as regards standardised data types and (optionally) agreed functional blocks.


For registration (entry of the product data in the central database of the ETS software tool for project design and commissioning) and certification, the applicant will have to contact KNX Association’s Certification Department.   

In order to allow a speedy market entrance, products can be branded with the KNX trademark after Registration. After that, the applicant has a maximum of 6 months to complete the testing of his products.   

For software testing, the applicant has the choice of a number of KNX accredited test labs, authorised to carry out third party KNX system and interworking testing. For hardware testing, the applicant either has the various testing facilities at his premises or takes recourse to a test lab of his choice.   

During software testing, emphasis is put on testing of uncertified parts only. As an example, a product based on an already tested KNX bus access unit (of which compliance to the system specifications has already been proven) must merely be submitted to the interworking tests.   

A uniform test tool ensures that the manufacturer is able to prepare much of the software test campaign at his premises and provide this preparation as input for third party testing.   

As soon as our certification department has received all test reports as regards system and interworking conformity together with the CE declaration for the hardware, a   certificate is issued confirming the use of the trademark   on the tested product.

Certification of Products Flow Chart


Concept Cost
Registration of hardware (developed by the applicant) € 600
Registration of software (developed by the applicant) € 180
Registration derived hardware € 180
Registration derived software € 60
Annual product surveillance fee for certified hard- and software combination (developed by the applicant) € 75