Nuki Smart Lock Go

Nuki Smart Lock Go

4.0
915 ratings
Launch Year: 2025

Model: 221148

6% OFF
€149.00
€139.99
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Our review

Nuki Smart Lock Go Review: The Easy Retrofit Lock With Auto-Unlock, If It Lasts

Effortless tool-free install on European doors and convenient hands-free auto-unlock, undercut by paid remote access and worrying durability reports.

The verdict

The Nuki Smart Lock Go (2025) is an affordable, retrofit smart lock for European-style doors that installs in minutes over your existing cylinder, no cylinder swap or drilling. Its best feature is convenience: auto-lock when you leave and auto-unlock as you approach with your phone or smartwatch, plus support for Matter, HomeKit, Google, Alexa and SmartThings. The catches are that full remote/smart-home access needs a paid add-on, and a notable number of owners report the lock failing (motor errors) within the first year, even though Nuki's customer service is excellent.

Best for
  • European retrofit doors
  • Renters
  • Hands-free auto-unlock
  • Budget Nuki entry point

Pros

  • Tool-free retrofit install over the existing cylinder (renter-friendly)
  • Hands-free auto-unlock on approach and auto-lock after leaving
  • Works with Matter, HomeKit, Google, Alexa, SmartThings and Home Assistant
  • Keeps your physical key; polished app
  • Quiet operation and solid build quality
  • Excellent, responsive customer service with fast replacements

Cons

  • Remote / full smart-home access needs a paid add-on (around 49 euros)
  • Reports of motor failures within the first year (Error 4a/A4)
  • AA batteries can swell or leak in some units
  • No built-in keypad, fingerprint, NFC or Apple Home Key (keypad is an accessory)
  • Not weather-resistant; runs on disposable AAs (no rechargeable pack)
  • Firmware-update and integration issues for some users

Who is the Nuki Smart Lock Go for?

This is an entry-level retrofit smart lock for European-style doors, designed to mount on the inside over your existing euro-cylinder key without changing the cylinder, which makes it ideal for renters. It turns your phone into a key via Bluetooth, with Wi-Fi and Matter (over Thread) for smart-home control, and supports auto-lock after the door closes plus geolocation auto-unlock. It works with Apple HomeKit, Google Home, Alexa, SmartThings and Home Assistant, and you keep your physical key. Keypad and fingerprint entry are sold separately as accessories. It runs on 4x AA batteries. It suits people who want easy, no-modification smart entry and the convenience of the door unlocking as they walk up.

What buyers love

Ease of install and everyday convenience win the praise. Owners repeatedly call setup quick and simple, mount it over the cylinder and you are done, with no damage to the door, which renters especially value. The standout feature is hands-free operation: the lock auto-locks a short time after you leave and auto-unlocks as you approach with a phone or smartwatch, which buyers love when arriving with their hands full of shopping. The build is considered high quality (one calls Nuki 'the Porsche of smart locks'), the app is polished, and operation is reasonably quiet even at night. When something does go wrong, Nuki's customer service stands out, with several reporting fast, free replacements within hours of reporting a fault.

What to know before you buy

Two issues recur. First, remote and full smart-home access is not as free as it sounds: connecting it to Alexa or controlling it away from home generally requires buying Nuki's remote-access option/Wi-Fi module (around 49 euros), and several owners felt the 'no bridge required' marketing was misleading. Locally over Bluetooth/Wi-Fi it is fine, but integration headaches and firmware-update problems frustrated some. Second, and more serious, durability: multiple owners report the lock failing after roughly 5 to 12 months with motor errors (Error 4a/A4, motor blocked, red blinking), and a few had AA batteries swell or leak inside. It is not weather-resistant, has no built-in keypad/fingerprint/NFC/Apple Home Key (keypad is an add-on), and runs on disposable AAs rather than a rechargeable pack.

Is the Nuki Smart Lock Go worth it?

As an affordable, renter-friendly way to add hands-free smart entry to a European door, it is genuinely convenient and easy to live with, and Nuki's support softens the blow when things fail. But the mixed rating is earned: budget for the paid remote-access add-on if you want full smart-home control, and weigh the reports of motor failures within a year on a security-critical device. If you want set-and-forget reliability or built-in keypad/fingerprint, consider a higher Nuki model or a different lock; for cheap, easy convenience with good support, it can still be a fair pick.

Frequently asked questions

Does the Nuki Smart Lock Go need remote access to be bought separately?

For control away from home and some integrations (such as Alexa), yes, you generally need Nuki's paid remote-access option/Wi-Fi module (around 49 euros). Locally over Bluetooth and Wi-Fi it works, but several owners found the 'no bridge required' wording misleading.

Is it a retrofit lock, and will it fit my door?

It is a retrofit lock for European-style doors with a euro-cylinder. It mounts on the inside over your existing cylinder without replacing it or drilling, so you keep your key. It is not designed for US-style deadbolts.

Does it have a keypad or fingerprint reader?

Not built in. Passcode and fingerprint entry require Nuki's separate Keypad / Keypad 2 accessories. On its own it uses Bluetooth (phone/smartwatch), auto-unlock and your physical key.

How reliable is it?

This is its weak spot. While many owners are happy, a notable number report the lock failing within 5 to 12 months with motor errors (4a/A4), and some had AA batteries swell or leak. Nuki's customer service is praised for fast, free replacements when this happens.

What smart-home platforms does it support?

It works with Apple HomeKit, Google Home, Amazon Alexa, Samsung SmartThings, Home Assistant and Matter (over Thread). Note that remote access for some of these may require the paid add-on.

At a glance

Summary

Everything this door lock supports, grouped by category.

Size & Materials
Inner Panel Dimensions (110 x 60 x 60 mm)11.8 oz (335 g)
Power
Backup Battery (AA Batteries)
Connectivity
2.4 GHz WiFiBluetoothThread Protocol (Thread Border Router required)
Integrations
Google HomeAlexaApple HomeKitSamsung SmartThingsHome AssistantMatter
Lock/Unlock System
Remote (One time purchase required)BluetoothPasscode (Keypad required)Fingerprint (Keypad 2 required)Physical Key
Automatic Lock / Unlock
Afer Door is closedBy Geolocation
Alerts
Door Locks/UnlocksLow Battery Alert
Features
One-Time Password (Keypad required)Periodic Password (Keypad required)

Price History

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Company
Nuki logo

Nuki

4.2/ 5 avg ratingAustria flagHeadquartered in Austria

Nuki is an Austrian company specializing in smart locks that retrofit onto existing European door cylinders without replacing the lock. Its smart locks support keyless entry, auto-unlock and remote access, with bridges for Wi-Fi and broad ecosystem support including Matter, HomeKit, Alexa and Google Home. Nuki is a leading smart lock brand in Europe.

Full specifications

Every spec, organized

Browse the full breakdown by category. Tap the on any row for what it means, or the for sources and documentation.

Size & Materials

Weather Resistance

NO

Outer Panel Dimensions

-

Inner Panel Dimensions

110 x 60 x 60 mm

Weight

11.8 oz (335 g)

Available in colors

NO

Power

Battery Type

4x AA

Battery Life

?

Backup Battery

AA Batteries

Connectivity

2.4 GHz WiFi

YES

5 GHz WiFi

NO

Bluetooth

YES

Z-Wave

NO

Zigbee

NO

Thread Protocol

Thread Border Router required

Other

NO

Integrations

Google Home

YES

Alexa

YES

Apple HomeKit

YES

Samsung SmartThings

YES

Home Assistant

YES

IFTTT

NO

Matter

YES

Lock/Unlock System

Remote

One time purchase required

Bluetooth

YES

Passcode

Keypad required

Fingerprint

Keypad 2 required

Face Recognition

NO

NFC Tag

NO

Apple Home Key

NO

Physical Key

YES

Automatic Lock / Unlock

When Away

?

Afer Door is closed

YES

By Geolocation

YES

Alerts

Door Locks/Unlocks

YES

Tamper-proof Alert

NO

Low Battery Alert

YES

Multiple Unlocking Failure Alert

NO

Video

HD Video

NO

2K Video

NO

Night Vision

NO

Internal Storage

NO

MicroSD Card Slot

NO

Motion Detection

NO

Range Of Detection

-

Customizable Area

NO

Sensors

Door Open/Close

NO

Features

One-Time Password

Keypad required

Periodic Password

Keypad required

Anti-peep Password

NO

Emergency Fingerprint

NO

Doorbell

NO

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