I have the Golmar t-740UNO
The ideal wiring is this:
For some reason mine has two wires each to the plus and minus:
I wired it according to this diagram
And I set up the app with the Generic Golmar Bus.
And I receive this message:
I’d appreciate any recommendations. I’m willing to try all options.
I can’t walk properly for the next few months so it’s important to get it functional quickly.
This might be important: when wired up according to the diagram (as in the photos) the doorbell does not ring.
We only get an “engaged” tone when pressing the doorbell from outside.
If I disconnect the nuki itself but keep the nuki wiring connected (including the resistor), it behaves as normal.
I have same model, have you help me to conect to may NUKI OPener??
Tengo el mismo modelo alguien podria guiarme con la conecxion??
I have also the same model, but by looking at the compatibility list it seem that is unsupported.
@OliviaR did you have any success making it work?
@Rafael_Acosta here is the answer: Golmar Plus intercom system support - #10 by Georg_S
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Finally i decide make one workaround since the Golmar T-740UNO does NOT supported the nuki opener because it is digital and i does not work, no worries I will give you the workaround .
First thing very important is ask someone to call your apartment intercom and press the button without hang it the intercom, if the door opens fallow the next steps…
1 - buy one Shellyplus1
2 - install the APP Shelly and configure the the Shellyplus1 as relay with the time-out of 2 seconds
3 - Open the golmar t-740uno and solder two wires one the push open button, connect the two wires on the Shellyplus1.
Note: for this work you o someone must ring the intercom downstairs, and than you can activated the Shellyplus1 action button.
If you have homeassistant you can setup the Shellyplus1 by find devices and connect using the IP of the devices and make some automatic rules.
I did one automatic rule wirh HA to blink one light when i open remotely, just in case someone is home and don’t waste time standing up the answer the intercom 
I noticed all the discussions around the support for Golmar T-740 UNO are from many years back.
Has there been any update in the meantime for support? Is there any workaround possible? Personally I just need the function that if somebody rings the bell, the door opens automatic. Nothing more nothing less.
Is there any roadmap for support planned? Are there any possibilities to get it to work in the beta program / with beta firmware?
please help!
Do you have a photo of your setup with the Shelly?
Anyway, I have connected purple and blue to soldered points on the open button. Chosing other door, I can now press “open” remotely, so that works for now. Alas, somebody needs to ring the bell. For me to open the main building door, I have to ring my bell and then press open in the nuki app. For others, they need to call me and I can then remotely let then in. So at least something is working.
My question now is, can any of the remaining nuki cables be connected to HZ- (this is the ringtone connection) and is there any way to detect the ring and trigger the “open” automatically?
If there is someway to catch the ring there should be a way to trigger open.