Plumbing system with no plugs and Sonoff Mini modules, -ew lack of space

Hi
I am carrying out an electrical installation (at my place) and have some doubts about the space in the box . I am using 60 kaiser black boxes with a depth of 66. sonoff mini modules for lighting control will be used. In the worst case I will have to the box

power input - 3x1.5mm2
power output to the nst switch - 3x1.5mm2
lamp output 3x1.5mm2
cable from the second switch (staircase) - 3 x 1.5mm2
the Sonoff Mini module
cables to connect the switch 2x1.5mm2 to the module

Has anyone tried this configuration ? Alternatively what are the patents to increase the space .
Maybe you have some photos of similar implementations. Thank you very much in advance for your advice.

Barbarossa77 wrote:

cable from second switch (staircase) - 3 x 1.5 mm2

There should be a minimum of 4x1.5.

Barbarossa77 wrote:

Possible what are patents to increase space .

e.g. such cans https://www.contorion.de/p/kaiser-electronicd...MI85fA8LiGgAMVRcDVCh0usAKOEAQYCCABEgJJTfD_BwE

It's not likely that you'll be able to fit it in. I've put in similar modules at my place (I just don't know what kind of boxes I have) and it was a problem to fit. Although I have 2.5mm2 cables everywhere. I had to dismantle the module casing and put the board itself, covered with insulating tape, into the box. Otherwise there was no option for it to go in. Note that this module is 60mm diagonally so ideally the diameter of the can. The thickness is 2cm, leaving you 4.6cm to accommodate the cables and the physical switch (2cm).

kokapetyl wrote:

should be 4x1.5 minimum.

why 4x1.5 ? .

Barbarossa77 wrote:

why 4x1.5 ?

Because not to use the N or PE conductor as phase conductors. And so that it would be possible to dispense (for some reason) with the Sonoff Mini and still have the possibility
of
functioning stair switches.

Right with the wires. Sonoffs are something unpredictable. Glasses peel off, things that are programmed come apart. It is better to protect yourself and lay the installation so that there is a way out of a Sonoff error on the mechanical switches. Friends spent on 34 such switches and one four-channel switch. Most stopped working after a while. For no reason at all. A few were able to be resuscitated by setting up with a router. Probably the program (software logic) in them flew off. I have written about mechanical strength. There are stresses in tight cans and crushed wires. This in turn accelerates the glass falling off. As for the cans, use deeper (x2) or add countersink rings. They are available at DIY chains.

Added after 10 [minutes]:

Another word: you need to pay attention to the spacing of the switches when mounting side by side. Sonoffs are wider.

PCF82 wrote:

at Sonoff. Friends spent on 34 such switches and one four-channel switch. Most stopped working after a while. For no reason at all. A few were able to be resuscitated by setting up with a router. Probably the program (software logic) in them flew off. I have written about mechanical strength. There are stresses in tight cans and crushed wires. This in turn accelerates the glass falling off. As for the cans, use deeper (x2) or add countersink rings. They are available from building supply chains. Added after 10 [minutes]:Another word: you need to pay attention to the spacing of the switches when mounted side by side. Sonoffs are wider.

Thanks for the feedback . I have questions .
1. Which sonoff are you writing about ? I intend to use the Sonoff Mini R2 and the Sonoff Dual R3 . I don't see any speed there .
2. How should the electrical connection look like . Should I connect as in the sonoff diagram shown below ? Or a different one ? Will 4 wires between the stair keys be enough ?
3) I don't know much about the spacing of the boxes. Please clarify. I am using Kaiser deepening boxes . They are connected to each other. I have also bought a Kaiser electronics box in order to have space for cables and electronics.

I was a bit flippant as I was referring to the Sonoff single, double and triple wall switches. On this one a staircase circuit could be connected. Then each switch is connected in parallel with respect to each other, and the staircase action is to switch them all on with a touch of the hand to whichever one you choose. It is the same with switching off. The same applies to switching off when you touch any switch by hand. All you have to do is set them up in mutual dependence in the telephone application. The logic there resembles Boolean algebra. When I wrote about the four-channel system, I meant: Sonoff 4CHPRO This one also worked for a month and then failed. The other one has worked flawlessly for two years so far. The four-channel is in the control panel and is used for telephone control of the building's exterior lighting. I did this installation, but friends cursed their own delight and the idea of Sonoffs.