As you may be aware DEMU has adapted its female socket bars. The 2010/3010 female socket bar has been replaced by type 4010. The 4010 has a screw-in length between the old 2010 and 3010. The 2020 male connector bar remains unchanged and fits in the 2010, 3010 and in the 4010. Also see the new coupler brochure. 

The 4010 female socket bar in combination with the 2020(P) is obviously KOMO certified. The KOMO K7044 Product Certificate is now available. The product certificate is for coupling with the 4010 in combination with the 2020(P), and the combination with 2010 and 3010 remains certified.