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? Is the dS485 bus a SELV or PELV circuit? How are the dSMs and the dSS connected? What happens in the event of a blackout? Can other deviced be linked to the dS-485 bus?