Hello Patricia,
this model is not compatible at the moment and still needs to be investigated.
Best regards
Georg
Hi Georg,
Any chance to get it running?
Best regards,
Stefan
Sorry, we have no news on the compatibility of this model yet.
This is a often used model. I have it in 3 of 9 Buildings. …new and old. When will you try to implement that?
same here… the last years nello promised again and again to implement it soon and I am afraid the situation is exactly the same here @ nuki 
@ Nuki: I have a multimeter and oscilloscope @ home. Maybe u can help me please to “reverse engineer“ the Elvox 8879 (pics -> above @ my first entry) to speed up the implementation process?
Hi Patricia,
could you please do some measurements of the bus signal with your oscilloscope when pressing the open door button and share your recordings with me? That would be very helpful! Thanks!
Best regards
Georg
Is somebody still working on that? I have the same model and would love get it working with Nuki.
It seems to be a common model these days - please someone get that done!
There is a couple of other Elvox 88xx Models supported. Maybe one of those settings work. Has anyone tried?
Thanks!
Michael
Dear Georg,
an eternity later (sry) - this is the result of my first minutes with the oscilloscope @ intercom:
ringing:
pressing the opener:
I am really not sure about the accuracy. 
Kindly,
Patricia
Dear Michael,
the Elvox 8879 is the only two wire bus system in the 88 series. The settings for Elvox 8870 - 8875 don’t work. The connection is possible but that’s it 
- no ringing/opening signal
Kindly,
Patricia
I don’t really need the ringing/opening signal. How can I set up the 8879 so I can at least open door with the Nuki opener?
Thanks!
no signal -> opening of the door not possible 
I was now able to connect the 8879 using the “Other Door” configuration as described in https://developer.nuki.io/uploads/short-url/3naDfQDFbzh3Je7ytrNzRDscvFz.pdf
I soldered the purple and blue cable directly to the opener button on the 8879. Good enough for me.
Dear Michael,
could you plz send us/me a picture of the “inner life“ of your intercom (soldered circuit board)?
Kindly,
Patricia
It was a bit of mess to stow the cabel and the connection so I really don’t want to open it again. But it’s totally obvisous the button is the metal thing in the right. See my image attached. I soldered to the back of the plate of course.
Thank u 
two last questions : you soldered the wires to the marked red spot (on the back of the plate - this is the only pic I have now) not to the blue spot?
Its still not working do you have to answer the ring/call before you can open the door? (without nuki opener)
Yes to the back of the curcuit board where the red and blue squares are. You can get the board out quite easily with a screwdriver to access the back.
I didn’t find a solution for the ring/call. I only need the opener.
@Georg_S is there any update on this topic. I also have the Elvox ART 8879. Is this supported by now?
Hello! I also have the Problem with the Elvox 8879.
…I spent some hours with research and try&error, but i was not able to connect Nuki Opener to the Elvox 2 wire Bus System. No chance.
Please inform me about updates to the connectivity of my Elvox device.
Meanwhile i solved the Problem according to the Post of Miachael Schiestl! This workes very fine. An disadvantage is, that the functionality “open on ring” can not be conducted, as Nuki doesn’t catch the ring signal. I also had to put out the buttons of the Elvoc device, because after soldering (löten) the wire the base underneath got to high (I am not a very good solder).
Nevertheless it works and looks good after i closed the case of my Elvox.
@Georg_S respectively Nuki Support: Please hang on this topic and keep me informed. I want to connect my Nuki to the Bus System of my Device
@michael_clockstone: Thank you for the Solution you providet. Very smart and helpful. Dankeschön!
Hey Everyone! I finally have a solution. For opening the dior i did as described in the post before. For catching the ring signal i connected the yellow and green nuki wires with slot 5 and 6s. thats the external bell (externes läutwerk).
this catches the ring signal and i can enjoy now ring on open and other functionalities!!!
see the picture how i connected it
Well, I tried what the lads did above:
- Soldered on the back 2 wires directly to the switch pins (blue and purple)
- Connected yellow and green to 5 and 6s respectively
- Had my partner downstairs testing stuff
Suddenly smoke came out and blew one of the components of my intercom. I guess one small component gave out and now I’m without intercom. If nobody experienced this before it could be that mine was just old and tired.
I will try and fix it and if not look for a different intercom that works with the same wiring of the building. If I can’t do anything about it I will return the Nuki opener.
Edit: apparently there is a continuation of this thread here, and I’ll try that next: Elvox 8879 as generic analogue intercom -> nuki opener