How to wire a Sonoff ZBMINI L2 Extreme for EU 2-way Light Switches

Hardware
21

Hi Community!
I try to find a solution with existing switches without the need of a new wire (L) and came across this video. They are using a Shelly 1L. It is in German language. But the creator shared a wiring diagram here. I thought it should be working with the ZBMINIL2 as well but I could not make it work? The switches do not trigger the ZBMINIL2 and I do not know why.
Any thoughts?
Many thanks in advance!
BR

22

You can refer to this one, just that you’ll need to replace the switches with momentary type and change the switch mode

IMG_3434
IMG_34342778×2568 317 KB

1 Like
23

Many thanks for your reply!
If it is the only way, I will need to change switches. But I still hope, there is a way to make it work with the existing switches and without the need of a new wire.
BR

24

You can stil convert existing ones to momentary but it depends on your switch

At least for mine (eu/uk) I can just add a tiny spring to it

25

Excuse my ignorance here. But if wiring a single switch works but puting L1 and switch live in and the main light swith on S1 And S2 then why could that same configeration not work for 2 way switching?

After all that’s how a 2 way swith is wired except both commons are connected togther

See my diagram.

Its the same as having 1 switch but using 2
As long as both commons are connected surly it would function the same?

Or am i missing something here.

1000080560
10000805601080×1282 123 KB

26

As pointed out above, in many cases it is quite easy to convert a regular rocker switch to a momentary one without needing to replace the entire switch. All you need is a spring, as most manufacturers will reserve a slot for the spring if they have a momentary switch in the same line of products. e.g. https://www.youtube.com/watch?v=3YOVekZR8Xo

this is how i slotted the spring into my regular rocker switch

IMG_5189
IMG_51891920×2560 291 KB

Then just basically bridge L1 or L2 to L

help-needed-with-2-way-switching-wiring-sonoff-zbminil2-v0-iuc16v7j8w3c1
help-needed-with-2-way-switching-wiring-sonoff-zbminil2-v0-iuc16v7j8w3c11516×1338 75.8 KB

27

Not sure… but wouldn’t this require an additional wire? Same as the solution above?

28

Many thanks for all your replies!
I think with the momentary switches it will surely work.

One last try with the existing switches. :wink:

I have tried the wiring according to this. Should work with no neutral and without the need of a new wire.

image
image1024×742 59.7 KB

But somehow I do not get it to work. :roll_eyes:
Is it because the shelly and the ZBMiniL2 are somehow different?

Many thanks again for any help!

29

Just wanted to say that I followed your instructions and it worked like a charm!

Added springs to convert my existing switches to momentary switches, wired following your diagram and voilĂ !

Thanks a lot!