Power supply control device for e.g. public lighting lamps, has control module to control switch in power/communication mode position, another switch in series with former switch and in closed and open positions related to respective modes

摘要

The device has a control centre with a control module to control a switch (22) based on time information, where the switch is on a power circuit in a power or communication mode position. Another module of a control interface (40) controls a switch (42) based on a voltage signal, where the switch (42) is on the circuit in series with the switch (22) in closed and open positions related to the respective power and communication modes. The power circuit supplies power to an electrical apparatus (A) when the switch (22) is in the power mode position, and is utilized for the circulation of the coded messages between the control centre and the control interface and vice versa, when the switch (22) is in the communication mode position.