@betonmoewe if I wrote that config.h cannot be changed, I wrote something wrong You can change whatever of course, just keep changes to config.h and the main sketch to the minimum since those can only be upgraded manually and not just by replacing the files. To add a new sensor, have a look at one of the existing sensors. Documentation can be updated as well by changing the README file. Should you have any doubt or issue feel free to open a new thread on https://forum.mysensors.org/category/43/nodemanager. Thanks!