Choose the latest version of ETS 6 (e.g., ETS 6.4 or 6.5 ). A license will often be required for full functionality, though limited trial versions may be available.

Depending on your project scale, you can choose from several licensing tiers available in the MyKNX Shop : License Type Device Limit Approx. Price Beginners/Testing Max 5 devices ETS6 Lite Small residential Max 20 devices ETS6 Home Private homeowners Max 64 devices (1 project) ETS6 Professional Commercial/Integrators Sources: System Requirements for Installation