Nuki Smart Lock Pro (5th Gen) review
Households who want to keep their existing BS3621-rated cylinder in place while adding WiFi-connected smart access with Matter support.
By Tom Calder
The more insurance-friendly of the two Nuki locks on test: it clamps onto the existing thumbturn rather than replacing the cylinder, so a BS3621-rated lock underneath stays exactly as it was. Built-in WiFi and Matter support mean no separate bridge is needed, and Nuki prices it well below the Ultra.
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- Clamps onto the existing thumbturn without replacing the cylinder, so any current BS3621-rated lock stays functional underneath
- Built-in WiFi and Matter (over Thread) support without a separate bridge
- A lower RRP than the Ultra
- The 5th-generation unit (2025) is a full redesign — compact stainless cylinder, brushless motor, built-in battery — so older '4th generation' reviews and listings describe a different lock
- Nuki itself makes no BS3621 or insurance-approval claim for the unit
- Full PIN/fingerprint entry needs the separately sold Keypad 2
Who shouldn't buy this
Skip this if your existing cylinder isn't a standard euro-profile thumbturn; check compatibility against Nuki's own documentation before buying.
Key specs
| Type | Clamp-on — existing euro-cylinder stays in place (no cylinder change, no drilling) |
| Access methods | App, built-in WiFi, Matter over Thread, optional Keypad 2 |
| Battery life | Built-in rechargeable Li-ion; magnetic 2-hour charge on or off the door; Nuki claims ~4–6 months on WiFi, ~9–12 on Thread |
| Insurance | Clamp-on — existing BS3621 lock underneath stays functional |
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Alternatives to consider
as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Want this cheaper?
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