[SOLVED] Sonoff ZBMINI-L2 installation guide

[uzer123]

I bought Sonoff ZBMINI-L2 as my light bulbs have no neutral, but I’m not 100% sure about the installation.
This is the back of my switch (the black wire gives current to two switches. One of the two goes to my light bulb):

The front of my switch is like this:

From the product page these are the wriring instructions:

But i’m not sure which applies to my case.I guess the far left image is the correct to me (and looks to be the same as this video), but i’m not sure where the other options are applied.

So, i believe i have to do the following:

Does this look right?

[stevegroom]

Hello,
I have a few switches configured like this - i.e. the left most diagram. I got an electrician to wire them up.

S1 to light switch to S2 is a closed loop - no mains wiring.
L in to L out would replace the live in to the switched live up to the bulb.

If the second switch does something, then the live in would still need to go into the switch – BUT IN THIS CASE BE SURE THAT THE LIVE DOES NOT FEED BOTH SIDES - CHECK EACH SWITCH IS INDEPENDENTLY FED.

I built a test rig on my bench to be sure I understood what it did.

[uzer123]

S1 to light switch to S2 is a closed loop - no mains wiring.

From my understanding, if S1 is connected to S2 then Lin goes to Lout. But what about the 2nd wiring then?:

Also, i found out that the 3rd and 4th options doesn’t apply to me at all. As they are for cases where the light bulb is controlled by 2 switches

If the second switch does something, then the live in would still need to go into the switch – BUT IN THIS CASE BE SURE THAT THE LIVE DOES NOT FEED BOTH SIDES - CHECK EACH SWITCH IS INDEPENDENTLY FED.

The second switch doesnt do anything for me, so i’ll just leave it as it is (no black Live wire will reach it). But, if i had to use it, i’ll buy a connector to make the black wire, 2 black wires: 1 that will go to Sonoff Line in and the other to the 2nd switch.

[stevegroom]

The first two diagrams have the same behaviour. In the second instead of closing s1 to s2, the s2 is closed to live. I’ve not used this option myself.

[uzer123]

Update:

Finally I did this configuration and works fine:

Just some notes:

1. the S1 (when the device is powered) has electricity. That’s why i think the first picture is the same as the second:
   

   

2. the wall switch doesnt work if you don’t pair with the coordinator

3. the pairing doesnt need the app as the youtube video shows (you don’t need an app at all). You can just “Add devices” in zigbee integrations in Home Assistant.