Kemo m091n capacitive 3 phase coupler for power line products kemo m091n p this module capacitively connects all 3 mains phases with each other so that transfer rates of up to 650 mbit via the mains supply can be reached for internet and computer networking depending on the nature of the mains supply p p if the signal is fed into a single phase only the phase coupler connects all 3 phases so that your internet or computer signal will be available via all other mains sockets in the hous