Does anyone know of a way to convert a staircase installation into a staircase installation? But the condition attention is such that you stay in accordance with the regulations. So the yellow-green vein is protective. The current state is as in the drawing below: Of course, the replacement of stair switches with temporary ("bell") options is involved. Or any other, as long as you get the functionality of lighting up the light for a specific time, after which the machine will turn it off. A typical solution like in staircases in blocks.
Well, but in which box to give the machine so that you can control from both cans ...? I know that at first glance the problem seems trivial. However, this is probably not the case. Or I have a mental eclipse.
I have problems with drawing. You connect the phase wire to two buttons. The working contacts of these buttons are connected together. Between these buttons you use two veins (brown and black) You supply the staircase with power supply (L and N) and an additional wire from these working contacts. You leave the machine with the lamp. I think you understand what's going on.