Nuki
Nuki Smart Lock Ultra
- Works with HA
- Local control
- Wi-Fi
- Thread
- Matter
- Bluetooth
Prices verified September 2026
See more smart locks picks on our Amazon storefront →Our verdict
Nuki's flagship, distinct from both Go and the Pro (5th gen): a brushless motor makes it the smallest (57 x 58mm) and roughly 3x faster Nuki lock yet, with built-in Wi-Fi needing no bridge for basic remote use. It runs on a built-in rechargeable battery rather than swappable cells — Nuki claims a 2-hour full charge either on the door or removed to a dock — a real trade-off against AA-powered rivals if you're away from home when it runs flat. Ships with an integrated universal euro-profile cylinder (separate Nordics and Swiss variants exist for those cylinder types). Officially Works with Home Assistant certified via Matter over Thread alongside Go and Pro — once paired over Matter you don't need a Nuki cloud account at all for day-to-day Home Assistant control.
What can Home Assistant control on the Nuki Smart Lock Ultra?
| Control | Type | What it does |
|---|---|---|
| Lock | Lock | Local lock/unlock via the Matter door lock cluster; reports jammed/locking/unlocking states with no cloud round-trip once commissioned over Thread. |
| Battery | Sensor (%) | Percentage battery reading, polled locally alongside the lock state. |
| Thread connectivity | Sensor | Diagnostic entity reporting link quality to the Thread border router — useful for confirming the border-router prerequisite is actually satisfied rather than silently failing. |
| Motor speed preset | Unsupported | Configurable only inside the Nuki app; absent from the Matter door lock cluster, so it can't be read or set from HA today. |
The Ultra's three motor-speed presets live in Nuki's own app-level config, not in Matter's standardised lock cluster, so unlike lock/unlock they don't surface as an HA entity or service call — switching speeds has to stay in the Nuki app rather than an HA automation. Matter-over-Thread commissioning depends on a Thread border router already joined to HA's Thread network; several owners report Bluetooth- or Wi-Fi-only pairing attempts against the Ultra failing silently with no error in the logs until a proper border router is in place. Where the built-in Wi-Fi is used for local control rather than Matter, reported battery drain is minor — notably better than the Pro's known Wi-Fi-Matter drain — though that figure is for the non-Matter local path, not confirmed yet for Matter-over-Wi-Fi specifically.
Specs
| motor | Brushless motor, 3 locking speeds |
|---|---|
| battery | Built-in rechargeable battery (not swappable AA cells); full charge in ~2 hours on-door or removed to a dock — Nuki has not published a runtime-per-charge figure |
| door fit | Integrated universal euro-profile cylinder included; separate Nordics and Swiss round-cylinder variants sold for those door types |
| dimensions | ⌀ 57 x 58mm |
How does the Nuki Smart Lock Ultra compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Nuki Smart Lock Ultra (this product) | £309 | Wi-Fi, Thread, Matter, Bluetooth | Yes | Works with HA |
| Aqara Smart Lock U200 | £169.99 | Thread, Matter, Bluetooth | Yes | Native |
| Aqara Smart Lock U200 Lite | £105.99 | Thread, Matter, Bluetooth | Yes | Native |
| Aqara Smart Rim Lock U500 | £279.98 | Matter, Thread, Bluetooth | Yes | Native |
Frequently asked questions
- Does the Nuki Smart Lock Ultra work with Home Assistant locally?
- Yes. The Nuki Smart Lock Ultra is controlled locally in Home Assistant through a certified "Works with Home Assistant" integration (matter), so it keeps working if your internet connection or the Nuki cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Nuki Smart Lock Ultra use, and do I need a hub?
- The Nuki Smart Lock Ultra uses Wi-Fi and Thread and Matter and Bluetooth. To pair it with Home Assistant you need no hub — it joins your Wi-Fi network directly; or a Thread border router (Home Assistant Connect ZBT-1, Apple TV 4K or a HomePod mini all work); or a Thread border router if it is Matter-over-Thread, or just your Wi-Fi network if it is Matter-over-Wi-Fi; or a Bluetooth adapter on your Home Assistant host or an ESPHome Bluetooth proxy. Nuki's own hub is not required when you integrate through a certified "Works with Home Assistant" integration (matter).
- How much does the Nuki Smart Lock Ultra cost in the UK?
- The lowest price we have listed for the Nuki Smart Lock Ultra is £309 at Nuki UK store. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.