Smart Lock Guide 2026: How to Choose and the 6 Best Models for Europe

The best smart lock for most European doors in 2026 is the Nuki Smart Lock Pro (5th generation): it fits over your existing cylinder without replacing it, combines Wi-Fi, Bluetooth and Matter over Thread, and runs on a rechargeable battery. On a tighter budget, the Nuki Smart Lock Go keeps Wi-Fi and Matter; if you want a fingerprint keypad in the box, the Aqara Smart Lock U200 is the most complete package.

This guide is based on manufacturer specifications, independent reviews and verified buyer feedback. It only covers models sold in Europe in 2026 that work with Euro-profile cylinders. You will find the full selection on our smart locks page.

How does a smart lock work on a European door?

In continental Europe, most front doors use a mortice lock with a Euro-profile cylinder. The locks in this guide are retrofit models: a motorised unit fits on the inside, over the cylinder, and turns the key or an adapter for you. Nothing changes on the outside, so your key still works.

Some brands also sell models that replace the cylinder (the Nuki Smart Lock Ultra, for example). They are smaller and faster, but you have to swap part of the lock, which is less convenient when renting.

How to choose

• A cylinder with an emergency function: this is the point most people miss. Most retrofit locks require a cylinder that can be opened from outside even when a key is inserted on the inside (often called an emergency or anti-blocking function). Without it, you may not be able to get in with your key. Check with the cylinder maker, or have a locksmith replace it.
• Cylinder length on the inside: it must protrude enough for the adapter to grip. Every manufacturer publishes a compatibility checker or guide.
• Connectivity: Bluetooth for nearby use, built-in Wi-Fi or a bridge for remote access, and Matter to control the lock from Apple Home, Google Home, Alexa or SmartThings. Matter over Thread needs a Thread border router (some Apple TV models, HomePod mini, recent Google or Amazon speakers and displays).
• Power: a rechargeable battery (charged every few months) or replaceable batteries (CR123 or alkaline). A low-battery alert in the app is essential.
• Keypad: a code or fingerprint keypad mounted outside lets you open the door without a phone. Some models include one, others sell it separately.
• Multi-point doors: on a stiff 3- or 5-point lock, choose a strong motor and make sure the door closes without forcing.

The 6 best smart locks in 2026

1. Nuki Smart Lock Pro (5th generation) — best overall

Launched in March 2025, the fifth-generation Smart Lock Pro brings the technology of the Nuki Ultra to a model that fits over your existing cylinder. It has built-in Wi-Fi, Bluetooth and Matter over Thread, with no extra bridge. Its brushless motor offers three modes, including a fast mode rated at under 1.5 seconds and a quieter "Gentle" mode.

Strengths: remote access without a bridge; works with Apple Home, Google Home, Alexa and Home Assistant through Matter; rechargeable lithium battery (around two hours to charge, according to Nuki); a mature app with temporary, recurring or permanent access and a full log; a wide range of accessories (Keypad 2 with fingerprint, door sensor).

Limitations: fairly bulky on the inside; the keypad is sold separately; needs a cylinder with an emergency function.

Best for: most households that want a long-lasting lock compatible with every major ecosystem, without touching the cylinder.

2. Nuki Smart Lock Go — best value

The Smart Lock Go is Nuki’s entry model, released alongside the fifth-generation Pro. It keeps the essentials: built-in Wi-Fi, Bluetooth and Matter over Thread, with the same app as the more expensive models.

Strengths: one of the most affordable ways to get a Matter lock with remote access; no bridge to buy; the full Nuki ecosystem (access sharing, keypad, activity log).

Limitations: runs on alkaline batteries (an optional rechargeable Power Pack is available); a less advanced motor than the Pro; simpler finish.

Best for: a first smart lock, a flat, or a short-term let managed remotely.

3. Aqara Smart Lock U200 — most complete, keypad included

The U200 pairs a retrofit motor on the inside with an outdoor keypad in the box, featuring a fingerprint reader, NFC and PIN codes. It uses Bluetooth and Thread, supports Matter over Thread and works without an Aqara hub for basic use. A U200 Lite version without the keypad is available for smaller budgets.

Strengths: keypad included, with fingerprint and NFC cards; Apple Home Key support through the keypad’s NFC reader; USB-C rechargeable battery for the motor unit; compatible with Euro cylinders.

Limitations: remote access and advanced automations need a Thread border router or an Aqara hub; the keypad runs on AAA batteries (or a wired supply); installation takes a little longer because of the keypad.

Best for: families who want to get in without a phone, and iPhone users who want Home Key.

4. Tedee GO 2 — most compact

Tedee, a Polish brand, is known for very compact locks. The GO 2 attaches with three screws to the cylinder adapter, uses Bluetooth and supports Matter over Thread. The Tedee Bridge is still useful for cloud integrations and remote access outside Matter.

Strengths: discreet design; Matter over Thread without a bridge; auto-lock and auto-unlock, virtual keys and an activity log; works with the Tedee Keypad PRO (fingerprint and PIN).

Limitations: three replaceable CR123 batteries, lasting around six months according to Tedee (eight at most); only for Euro cylinders with flat keys and an emergency function.

Best for: flats and doors where a bulky unit would be in the way.

5. Yale Linus Smart Lock L2 — the heritage brand

The Linus L2 is Yale’s retrofit lock for Euro cylinders. It has built-in Wi-Fi and has supported Matter over Wi-Fi since a firmware update, so you need neither a bridge nor a Thread router. The included DoorSense sensor tells you whether the door is actually closed.

Strengths: built-in Wi-Fi; works with Apple Home, Google Home, Alexa and SmartThings via Matter; DoorSense included; USB-C rechargeable battery; wide retail and after-sales network.

Limitations: battery life of up to about six months; the battery has to be removed to charge it; the cheaper L2 Lite has no Wi-Fi and needs a bridge for remote access.

Best for: buyers who want a major lock brand and a direct Wi-Fi connection.

6. SwitchBot Lock Ultra — longest battery life

The Lock Ultra is SwitchBot’s latest retrofit lock sold in Europe. It is much slimmer than the older Lock Pro, has a 4,200 mAh rechargeable battery rated for 9 to 12 months, and a backup CR123A cell for when the main battery is flat or charging.

Strengths: excellent rated battery life; fast, quiet motor according to the manufacturer; many ways to unlock with SwitchBot keypads (PIN, fingerprint, NFC, face recognition on some models); broad cylinder compatibility.

Limitations: Matter and Apple Home require a Matter-enabled SwitchBot hub; no native Thread.

Best for: homes already using SwitchBot, or anyone who wants to charge as rarely as possible.

Comparison table

Mistakes to avoid

• Buying without checking the cylinder: without an emergency function, the adapter can block the key from outside. It is the main reason for returns.
• Counting on Matter without a Thread router: Matter over Thread models need a border router that matches your ecosystem.
• Forgetting to charge: turn on low-battery notifications and keep your physical key with you or with someone nearby.
• Sticking onto a dirty door: for adhesive mounts, clean the surface first and respect the curing time.
• Turning on auto-unlock without tuning it: proximity unlocking needs fine-tuning; start with a confirmation notification.

Installation, renting and security

All six models fit on the inside, mostly without drilling the door, and come off without leaving a mark, so they generally suit rented homes. Still, let your landlord or building management know, especially if an outdoor keypad has to be mounted.

A smart lock does not make the door physically stronger: the cylinder and the lock itself are what resist a break-in. For a front door, a certified security cylinder remains a sound basis. On the digital side, choose a brand that ships regular updates, enable two-factor authentication on your account and revoke guest access you no longer need. To go further, read our smart home security guide.

Our verdict

The Nuki Smart Lock Pro (5th generation) is the most balanced smart lock in 2026: it fits over your existing cylinder, has Wi-Fi and Matter over Thread built in, a rechargeable battery and a complete app. The Nuki Smart Lock Go offers the same foundations at entry-level. The Aqara Smart Lock U200 is the best option if you want a fingerprint keypad from day one, the Tedee GO 2 is the most discreet, the Yale Linus L2 the simplest on Wi-Fi, and the SwitchBot Lock Ultra lasts longest between charges. To complete your entrance, see our guide to video doorbells without a subscription.