Nuki Smart Lock Go Review: Compact Keyless Entry for Smaller Doors

If you live in an apartment, a flat, or a home with a secondary door that has limited space around the lock, you know how hard it can be to find a smart lock that fits. Many full-sized smart locks require ample clearance for the motor and battery pack, leaving smaller doors out of the smart home revolution. Enter the Nuki Smart Lock Go – a purpose-built, compact smart lock designed specifically for doors where space is at a premium.

The Smart Lock Go shares the same core Nuki DNA: Bluetooth, Wi-Fi (via bridge), and full control through the Nuki App. But it packs that functionality into a slimmer, lighter form factor that mounts discreetly on your door. In this review, we’ll walk through its design, installation, performance, and who it’s best suited for – so you can decide if the Go is the right keyless upgrade for your home.

Design and Build Quality

The first thing you notice about the Smart Lock Go is its size. At roughly 30% smaller than the flagship Smart Lock Pro, the Go fits snugly against the door without protruding obtrusively. The matte black finish and rounded edges give it a modern, understated look that blends with most door styles. Despite its compactness, the build feels solid – the casing is made from durable polycarbonate, and the turning mechanism is reinforced for long-term reliability.

The Go uses a motor that turns your existing deadbolt or rim cylinder from the inside. On the exterior, you keep your mechanical key or upgrade to a Nuki Keypad for keyless access. The lock itself requires no additional hardware on the outside, which is ideal for rental properties where you cannot change the door’s exterior. A subtle LED ring provides visual feedback for status, lock actions, and low battery.

• Dimensions: approximately 95 x 50 x 50 mm (varies slightly by adapter)
• Weight: around 150g – much lighter than full-size models
• Battery: 4 x AA batteries (included) – lasts up to 6 months with normal use

Installation Process

Installing the Smart Lock Go is straightforward, especially if you are comfortable with a screwdriver. Nuki provides a comprehensive installation guide and video. The Go attaches to the inside of your door using a customisable adapter plate that fits most standard deadbolts and rim cylinders. The process typically takes 15–30 minutes. For doors with non-standard locks, Nuki offers adapter tips and compatibility checks on their website.

One advantage of the Go is that it does not require removing your existing exterior lock cylinder – you simply attach the device inside. This makes it a great choice for renters who cannot modify the door’s exterior. Additionally, you can pair the lock with a Door Sensor to monitor whether the door is open or closed, enabling automatic lock/unlock routines. The Nuki App walks you through calibration, and after that, you are ready to control the lock from your smartphone.

Key Features and Everyday Use

The Smart Lock Go offers the same core smart lock features as its bigger siblings: keyless entry via the Nuki App, scheduled access for guests, Auto Unlock (geofencing), and integration with Amazon Alexa, Google Assistant, Apple HomeKit (via bridge), and IFTTT. You can share digital keys with family or friends and see a log of who locked or unlocked the door. The Auto Lock feature secures the door after a set time, which is perfect for forgetful moments.

For daily convenience, many users add a Keypad outside the door. The Keypad allows you to enter a PIN code to lock or unlock – no phone needed. It is weather-resistant and mounts with adhesive or screws. Another popular companion is the Power Pack, which gives the Go a backup power source if the main batteries run low. You can also integrate with the Opener to manage a garage door or gate through the same Nuki system, creating a truly unified smart access setup.

Performance and Connectivity

During testing, the Smart Lock Go performed reliably. The motor is quiet but not silent – you can hear a soft whirring sound as it turns the lock. Response time via Bluetooth is under a second, and using the Nuki Bridge extends range so you can control the lock remotely via the cloud. Connection stability was good within typical apartment distances (up to about 10 metres through one wall).

Battery life is rated at up to 6 months with normal usage (around 10 lock actions per day). The Nuki App notifies you before the batteries get low, and the external Keypad also warns of low battery. The Go supports both iOS and Android, and the app is clean and responsive. Firmware updates install automatically, ensuring you always have the latest features and security patches.

• Bluetooth 5.0 for close-range control
• Optional Wi-Fi Bridge for remote access
• Compatible with Nuki Keypad, Keypad 2, and Keypad 2 NFC

Pros and Cons

Pros: Compact size fits small doors perfectly, easy DIY installation, retains exterior key for renters, wide app compatibility, reliable Auto Lock/Unlock, good range with Bluetooth, affordable price compared to full-size models, and a large ecosystem of Nuki accessories like the Door Sensor and Power Pack.

Cons: Not as fast as some motorised deadbolts (slight delay), requires physical key on one side if no Keypad is added, no built-in Wi-Fi (Bridge sold separately for remote access), and battery life is shorter than some competitors (but typical for compact locks).

Who Should Buy the Nuki Smart Lock Go?

The Smart Lock Go is ideal for apartment dwellers, homeowners with secondary doors (e.g., back door or side entrance), and renters who cannot permanently alter the door. If you have limited space around your lock – for instance, a narrow door frame or a lock placed very close to the edge – the Go’s compact profile will fit where larger locks would not. It also suits first-time smart lock buyers who want a simple, reliable entry point into the Nuki ecosystem without the higher cost of the Pro series.

If you need a smart lock for a thicker or more complex door (e.g., a multi-point locking system) or desire the fastest motor available, you might prefer the Nuki Smart Lock Pro or the new Smart Lock Ultra. But for the majority of standard single-cylinder doors in apartments and smaller homes, the Go offers a perfect balance of size, features, and value.

• Best for: apartments, flats, secondary doors, rental homes
• Not ideal for: large multi-point locking doors or commercial use

The Nuki Smart Lock Go proves that great smart home security doesn't have to be bulky. If you have been holding off on upgrading because your door is too small or your landlord restricts modifications, the Go is the answer. It delivers reliable keyless access, smooth app control, and peace of mind – all in a package that fits almost anywhere. Explore the Smart Lock Go today and see how easy it is to bring smarter access to your smaller door.