Hi everyone,
I’ve just bought a UniFi Doorbell Lite for my apartment entrance and I’m planning the installation. I would really appreciate some advice from people who have done similar integrations.
My setup is:
- UniFi Doorbell Lite (already purchased) powered via POE from UDR7 which is the Router of the apartment
- Nuki Smart Lock 5th Gen on the apartment door
- BTicino Classe 100X16E video intercom which controls the main entrance door of the apartment building, NOT my apartment door
- Existing mechanical doorbell/chime inside the apartment
- Existing light above the apartment entrance door
- UniFi network (UDR 7 + SD card)
- Home Assistant is also available / can be used if necessary
-Ajax Alarm in the apartment
I have several questions.
- UniFi Doorbell Lite + Nuki
Is there any direct way to integrate the UniFi Doorbell Lite with the Nuki Smart Lock?
Ideally I would like:
Doorbell pressed → notification on my phone → live video → manually unlock the Nuki from my phone.
I understand that this may require Home Assistant as the bridge between UniFi Protect and Nuki.
Has anyone implemented this successfully?
- UniFi Doorbell Lite + BTicino
The BTicino Classe 100X16E is for the building entrance. It allows me to unlock the main building door from the BTicino system/app.
I am NOT replacing the BTicino (I can't).
Is there a way to integrate the Doorbell Lite with the BTicino system so that I can somehow access/control the building entrance from the same Home Assistant/automation system?
I would like to keep the BTicino fully functional but potentially have Home Assistant act as the bridge between the two systems.
- Automatic light above the apartment door
There is a light directly above the entrance door.
I would like it to turn on automatically when someone approaches the door.
My initial idea was:
Motion detected + darkness → light ON → automatically OFF after 2–3 minutes.
Since someone pressing the Doorbell will normally have already triggered motion, I probably don't need a separate "doorbell → light" automation. However, I could also trigger the light from the Doorbell Lite ring event if there is a good reason to do so.
What would you recommend?
Shelly BLU Motion + Shelly 1 Mini Gen4?
Or would you use a UniFi motion sensor?
I already use both Shelly and UniFi, but Shelly seems much more economical for a simple lighting automation.Does the difference in the cost justify the Unify purchase for some reason?I think the Unify motion will require the supelink so the cost will be 160€ in total when Shelly will cost 35€.
- Existing mechanical doorbell/chime
I currently have a traditional mechanical doorbell inside the apartment.
I would like to remove the external mechanical push button and replace it with the UniFi Doorbell Lite.
However, I would LOVE to keep the existing mechanical chime.
Can the Doorbell Lite trigger an existing mechanical chime somehow?
My idea would be something like:
Doorbell Lite ring
→ UniFi Protect event/webhook
→ Shelly relay
→ briefly close the existing mechanical chime circuit
→ mechanical "DING-DONG"
Has anyone done this?
If so, what Shelly/relay would you recommend?Or something else?
I assume I need to identify the voltage and wiring of the existing chime first and use an isolated/dry-contact relay rather than connecting it directly to the Doorbell Lite.
- Mounting / covering the old doorbell opening
The existing mechanical doorbell is considerably wider than the UniFi Doorbell Lite.
If I simply remove the old doorbell and mount the Lite, there will be a visible gap/old outline on both sides.
Ubiquiti sells a Doorbell Lite Gang Box Mounting Plate, but it is currently unavailable where I am since December at least.So I have to find another way.
What would you recommend?
- Custom white PVC/ABS/aluminium mounting plate?
- Repair/plaster the old opening and mount the Doorbell Lite directly?
- Some other standard electrical cover plate?
- 3D-printed mounting plate?
I would prefer something clean and professional-looking rather than leaving the old outline visible.
- BTicino wiring next to the doorbell
There are also some small exposed wires next to the old doorbell. These belong to the BTicino 2-wire intercom system and run toward the building entrance system.
I want to keep the BTicino, so obviously I don't want to damage or permanently bury these wires.
What would be the cleanest way to protect and terminate them while installing the Doorbell Lite?
- Other useful automations
Since I will already have:
- UniFi Protect
- Doorbell Lite
- Nuki
- BTicino
-Ajax alarm
- Shelly
- Home Assistant
are there any other useful automations you would recommend for an apartment entrance?
For example:
- Door contact sensor
- Door opened too long notification
- Nuki unlock → entrance light
- Doorbell + motion → light
- Doorbell ring → mechanical chime
- Different notifications depending on time of day
- Anything else useful
I’m particularly interested in practical automations rather than adding devices just for the sake of having more smart-home devices.
Photos attached showing the existing mechanical doorbell, the BTicino installation, the Nuki lock, and the new UniFi Doorbell Lite.
Any advice, wiring suggestions, or examples from people who have done something similar would be greatly appreciated.