A power and signal distribution system comprises a converter unit connected to a plurality of control units. The converter unit and the control units are arranged in areas difficult to access, for instance on the sea bed. The converter unit is connected to a remote monitoring and supplying device via at least one cable connection. Each control unit has assigned thereto at least one production apparatus for crude oil or natural gas corresponding gate valves, chokes, biops, actuators.In some embodiments, the power and signal distribution system the converter unit comprises a data separation device and a voltage converter. The converted voltage from the voltage converter is transmitted together with data/signals from the converter unit to at least one of the control units.