ETS Versions & History
The KNX system has by now a history of more than 25 years. In this period several ETS versions were released.
ETS1 : 1993 to 1996
ETS2 : 1996 to 2004
ETS3 : 2004 to 2010
ETS4 : 2010 to 2014
ETS5: 2014 to -
ETS5 is backwards compatible to ETS4, ETS3 and ETS2; hence data (such as KNX
projects) of earlier ETS versions can be processed without problems.
If you would like to find out all the changes that have been done between versions, you can select the corresponding ETS version.