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 How are the dSMs and the dSS connected? What is the maximum cable length for a dS485 bus? How can I switch/control sockets? Can I use a free NYM cable or control line for the dS 485 bus? Is the dS485 bus a SELV or PELV circuit?