The idea of this assembly is to get the automatic shutdown of a series of devices, by detecting the shutdown of the main equipment (Master). For example, if we connect the CPU of our PC to the main socket of this circuit, and the rest of the devices (monitor, printer, scanner, etc.) to the auxiliary socket; when disconnecting the CPU the power of the whole set would be disconnected ... even that of the control circuit itself. In this way there would be no equipment consuming in Standby mode, and the total consumption would be zero.
M3 insert nuts are needed to close the box and hold the PCB (minimum 8).
Information in spanish