US Patent 11557198 Network distribution using common communication and power

There is described a network distribution system using common communication and power comprising a power line, multiple fire alarm units, and a power line control device. The power line provides alternating current, and the fire alarm units are coupled to the power line. The power line control device is coupled to the power line and a particular fire alarm unit of the plurality of fire alarm units. The power line control device comprises a communication translator to convert between power line and non-power line protocols and a power line core to modulate signals to, and demodulate signals from, the power line.