Version 2.1, status 2006-11-14.
Version 2.1.2, status 2006-12-13
Includes firmware version 2.1.07.11.23.
limited compatibility to ETS4! Please use these products in the ETS4 only with the two-level or three-level group address structure as found in the ETS2/3. Use with the expanded group address range or the free group address structure is not possible.