Which cable do you recommend according to VDE 0100-444 for the dS485 bus? digitalSTROM Support September 28, 2018 06:12 Updated Follow We recommend to use non-shielded twisted paired cables, preferably with 0.8 mm diameter, due to the mechanical stability. Related articles Can I use a free NYM cable or control line for the dS 485 bus? How are the dSMs and the dSS connected? Is the dS485 bus a SELV or PELV circuit? What is the maximum cable length for a dS485 bus? What if there is no internet available in the fuse box?