Nuki Smart Lock Pro (4th gen)
The EU retrofit king — fits over your existing euro cylinder with Wi-Fi, Matter and rock-solid reliability
Key characteristics
Highlights
- ✓ Retrofits over an existing euro cylinder — keys still work
- ✓ Built-in Wi-Fi plus Bluetooth and Matter over Thread
- ✓ Auto-unlock, remote access and door-sensor feedback
- ✓ Big accessory range: keypad, opener, fob
Our take
Nuki is the smart lock most EU homes should buy: it clamps over your existing euro cylinder so you keep your keys and don't touch the door hardware, the built-in Wi-Fi and Matter make it reliable and future-proof, and the keypad and opener accessories round out a proper system. It's chunky on the inside of the door, but nothing else is this dependable in Europe.
Pros & Cons
Pros
- + Easy retrofit, keys still work
- + Built-in Wi-Fi and Matter
- + Very reliable auto-unlock
- + Strong accessory ecosystem
Cons
- − Bulky indoor unit
- − Premium price
- − Auto-unlock needs tuning
Review sources
We aggregate scores from these sources. Each source is weighted by credibility tier.
Best Overall
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