# Nuki Smart Lock Ultra (Euro profile)

Nuki Smart Lock Ultra is the premium direct-Matter Nuki lock for compatible Euro profile doors. It is the strongest pick when you are willing to replace the cylinder and already have Thread infrastructure near the entrance.

Canonical page: https://matterhome.io/devices/nuki-smart-lock-ultra-euro
Markdown page: https://matterhome.io/devices/nuki-smart-lock-ultra-euro.md
Author: Matterhome Editorial Team
Author profile: https://matterhome.io/authors/matterhome-editorial-team
Edited and fact-checked by: JC Martinez
Editor profile: https://matterhome.io/authors/jc-martinez

## Device Facts

- Brand: Nuki
- Model: Smart Lock Ultra (Euro profile)
- Product type: Matter-over-Thread Retrofit Smart Lock
- Category: Locks
- Connection: Matter over Thread
- Matter status: Nuki lists Smart Lock Ultra as a Matter-over-Thread smart lock and says Nuki Smart Locks from the 4th generation onward are Matter-enabled.
- Launch date: 2024-11
- Thread border router required: Yes
- Brand hub required: No
- Typical price range: €349
- Markets: Europe, United Kingdom
- Review status: Compatibility guide
- Product image: https://matterhome.io/content-assets/devices/nuki-smart-lock-ultra-euro/product.webp
- Product image alt text: Nuki Smart Lock Ultra with Universal Cylinder for Euro profile doors
- Product image source: https://media.crystallize.com/nuki-production/24/12/2/139/nuki-ultra_universal-cylinder.png

## Ecosystem Support

- Apple Home: Supported
- Google Home: Supported
- Alexa: Supported
- SmartThings: Supported
- Home Assistant: Supported

## Best For

- European doors where replacing the cylinder is acceptable
- Buyers who want Nuki's smallest and fastest Matter-over-Thread lock
- Homes that already have a reliable Thread border router near the door

## Skip If

- You need a North American deadbolt retrofit
- You do not want to replace the cylinder
- You expect every Nuki permission, log, and accessory setting inside your Matter app

## Setup Notes

- Confirm the door uses compatible Euro profile cylinder hardware before buying.
- Install and calibrate the lock in the Nuki app before adding it to a Matter ecosystem.
- Use Matter over Thread for Apple Home, Google Home, Alexa, SmartThings, or Home Assistant control.
- Keep physical key access and a backup entry method available during setup.

## Known Limitations

- Matter lock support can differ for users, codes, logs, notifications, and advanced access rules.
- Nuki accessory setup, firmware, remote access, and detailed permissions still depend on Nuki's app.
- This Euro profile model is not the North American deadbolt version.

## Pros

- Native Matter-over-Thread retrofit lock for Euro profile doors
- Includes the Nuki Universal Cylinder for a cleaner hardware fit
- Smaller and faster than older Nuki retrofit locks
- Works with Nuki Keypad 2 and Keypad 2 NFC accessories

## Cons

- Requires a Matter controller with Thread border router support
- Installation is more involved than a clip-on retrofit lock because the cylinder is replaced
- Lock administration and access logs may remain stronger in the Nuki app than in Matter apps

## Sources

- https://nuki.io/en/products/smart-lock-ultra
- https://nuki.io/en/products/product-details/smart-lock-ultra-technical-details
- https://nuki.io/en/company/news/nuki-now-supports-matter
- https://media.crystallize.com/nuki-production/24/12/2/139/nuki-ultra_universal-cylinder.png

## The premium Nuki path is a door-hardware choice first

Nuki Smart Lock Ultra is the small, fast member of Nuki's current direct-Matter lineup, but the Ultra story starts with the cylinder. The Euro profile version includes Nuki's Universal Cylinder, so it is a better fit for buyers who are willing to change the inside hardware rather than just strap a motor over the existing setup.

That tradeoff can be worth it. The lock gets Matter over Thread for ecosystem control, Nuki's own app for detailed setup, and compatibility with Keypad 2 and Keypad 2 NFC accessories. It is still not a universal retrofit answer.

## Matter runs over Thread

The Ultra does not need a Nuki bridge for its Matter path. It does need a Matter controller that can also act as, or reach, a Thread border router. If your entryway is far from the nearest Thread border router, solve that before judging the lock.

Matter should cover normal lock state and control. User management, logs, remote access, accessory pairing, and lock-specific settings are still places where the Nuki app may matter more than the ecosystem app.

## Skip it if the cylinder swap is the problem

Smart Lock Ultra makes the most sense when replacing the cylinder is acceptable and the door is compatible. If you need a less involved European retrofit, Nuki Smart Lock Pro or Smart Lock Go may be easier to justify. If the door is a North American single-cylinder deadbolt, this is the wrong Nuki article entirely.