I am trying to install a Sonoff ZBMini (not the L2 version) with a two-way switch, but I am not having any luck. Perhaps it has to do with how we tend to wire lights in the Netherlands. Does anyone have this working, and perhaps has a tip for me? My wiring diagram is below. Do I need to run a dedicated N wire to the light for this to work? I do have an N wire where I want to put the ZBMini (the green highlighted area).
#ZBmini with two-way switch
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Depends a bit on what exactly you bought
If it's the unit with neutral, you will need to provide neutral to the unit
There should be various wiring examples on the materials inside the box
I've checked all the documents, and I have a neutral available, but it's the general neutral of the house, it doesn't go to the light directly.
By the image you showed (which I think is the official sonoff one) I would need a neutral directly to the light from the ZBmini.
Yes
Not sure how this internally works but it may or may not switch either of those and simply pass along the other
Something you could try and check with a meter
Not sure tho
Guess I have no option but to pull a cable then. I've tried it by simply putting an N into both the N In, but they are both just connected to the N loop in my house, not directly to the light
That is a complicated thing. You have to find the end of the dual switch config where L is connected. The other End goes into S2 of the mini. The lamp must be cut from L of the switches and is now put between N and the Mini Lout.
The way I solved these issues is by replacing the switches by smart switches, bridging the cables of the old SPDT switches with wago clamps and putting the smart modules into the wiring wall box somewhere under the ceiling, often near the door.
N is the same throughout the entire house. The only thing you have to do is to put the relay module behind the switch closest to the lamp. The relay module doesn't even "have to know" how many switches there are.
Sure, but you may not find N in the outlets of the switches, depending on how old the house is. So you need to check. You will very likely find it at the socket of the lamp, but in old houses there is no installation outlet where the mini will fit into where the lamp is. On the other hand, at the lamp socket is only switched L, so you cannot install the ZBmini there. You may very likely find L, switched L and N in the box above the door where the cables where feed into the room from the fuse box.
Btw. they are rare and they are forbidden since the 1950s, but there are still "Hamburger Wechselschaltung" in houses. These have the lamp in between the two switches. Depending on the state of the switch, the tip or the ring of the socket is life.
Btw N is not the same through the entire house if you have more then one RCD. If you feed back L from one RCD throug the N of a different one, at least one will trip
This is what I assumed, but when connected that way, the delay worked via HA, but the physical switches didn't work anymore. How would you wire it? Ie which cables into which inputs?