@Smanar
I also tested changing “switch mode” to enable “momentary” switch mode.
I’ve confirmed that it works. When i set 0x000a (switch mode) for endpoint 0x01 under the “lumi specific” cluster to a value of 2, the button registers only on release of the button press. When set to a value of 1 it registers both the press down and the release.
I read here your post on how to change that setting for the t2. I made the change manually in the deconz-gui. I did not change the DDF so not sure if the example you gave in the thread below would work for the t2 as i changed the value in 0x01.