This can be checked on the Logitech support site. https://support.myharmony.com/de-de...
But even if there is an OK there, it is possible that certain functions do not work completely satisfactorily. For example, my receiver can only be switched off completely when a switch-off command is sent again via the help function. All the programming around has not helped so far. But despite this drawback, it is still better than juggling with countless remote controls. You always have the wrong one in your hand anyway.