Aqara Smart Lock U200 vs Nuki Smart Lock Go

Aqara Smart Lock U200 wins with built-in fingerprint, keypad, NFC and Apple Home Key, IPX5 weather resistance and its password toolkit. Nuki Smart Lock Go counters with a lower price, higher rating, 2-year warranty and built-in Wi-Fi, but every keypad or fingerprint option costs extra.

What comes in the box. The Aqara includes essentially every unlock method built in. The Nuki is a bare retrofit motor for European cylinders: phone, watch and auto-unlock work out of the box, but keypad and fingerprint require separate accessories, and full remote access needs a paid add-on.

Not always. The Nuki Smart Lock Go mounts over a European profile cylinder with the existing key, ideal for EU doors. The Aqara Smart Lock U200 is a deadbolt retrofit with an exterior keypad, and its IPX5 rating tolerates exposed installations the Nuki (not weather-resistant) should avoid.

The Aqara Smart Lock U200 uses a rechargeable built-in battery lasting about 6 months, with AAA and USB emergency backups. The Nuki Smart Lock Go runs on four AA cells; some owners report swelling or leaking units, though Nuki's customer service earns praise.

Choose Aqara Smart Lock U200 for a complete keyless setup out of the box: fingerprint, codes, NFC, Home Key and guest passwords across all platforms including IFTTT.

Choose Nuki Smart Lock Go for the cheapest, fastest Euro-cylinder conversion with auto-unlock as you arrive, a 2-year warranty and strong ratings, budgeting for the keypad accessory and remote-access add-on if you need them.