A New Standard in Smart Home Access: Nuki Smart Lock Ultra

Nuki Smart Lock Ultra is Nuki's smallest, fastest, and quietest smart lock to date, setting a new reference point in smart home access. Its brushless motor, Matter over Thread support, and broad cylinder compatibility mean Ultra makes your door fully smart without changing the door, removing the key, or losing outside key access.

What Nuki Smart Lock Ultra is and what makes it different

Ultra is a compact smart lock that mounts on the inside of your existing cylinder and turns the key on your behalf. The most visible difference is the brushless motor: it makes the lock both faster and noticeably quieter than prior generations. It is also Nuki's smallest lock — almost invisible on the door, with a clean profile.

Installation is tool-free. Average time: 15 minutes. No door modification, no cylinder replacement, no key changes required. External key use continues unchanged.

What Matter over Thread does in Ultra

Ultra supports Matter over Thread. Matter is the open standard that allows smart home devices to communicate across brands. Thread is the wireless mesh protocol that delivers commands between devices with low latency and low energy consumption. Together, they mean the lock joins your smart home ecosystem faster, more reliably, and in a future-compatible way.

Supported integrations: Apple Home, Google Home, Amazon Alexa, Samsung SmartThings, IFTTT, and Home Assistant. Voice commands, arrival/departure automations, and remote lock-state monitoring all become available through these integrations.

Cylinder and door compatibility

Ultra supports not only the common Euro-profile cylinder but also Swiss round-profile cylinders — a geometry found on a significant share of doors across Europe and Türkiye. Universal Cylinder is available for configurations where guaranteed compatibility is needed. Steel-frame doors are supported.

Check your door's fit at the compatibility page.

Who is Smart Lock Ultra for?

• Users who want the most compact and advanced smart lock available
• Those who prioritize fast, quiet operation (brushless motor)
• Smart home builders who want Matter and Thread for platform independence and longevity
• Doors with Swiss round-profile or other cylinders that Go/Pro don't support
• Anyone who wants the lock to come with a Universal Cylinder rather than relying on their existing one

If remote access (bridge-free, built-in Wi-Fi) is the primary need and Matter is not a requirement, Smart Lock Pro 5th Gen is a strong alternative at a lower price. Compare at nuki.com.tr/urunleri-karsilastir.

Conclusion

Smart Lock Ultra combines the smallest form factor in the lineup, a brushless motor for speed and quiet, Matter over Thread for ecosystem compatibility, and broad cylinder support — all in one device. For anyone building a smart home that will stay relevant as standards evolve, Ultra is the right foundation.

Full specifications and purchase: Smart Lock Ultra product page.