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| Feature | Aqara Smart Lock U200 | Nuki Smart Lock Pro | Winner |
|---|---|---|---|
| Price | $169.99 | €269.00 | Aqara Smart Lock U200 |
| Rating | 2.6 | 4.3 | Nuki Smart Lock Pro |
| Warranty | 1 year | 2 years | Nuki Smart Lock Pro |
| Weather Resistance | IPX5 | NO | Aqara Smart Lock U200 |
| Connectivity | Bluetooth, Thread Protocol | 2.4 GHz WiFi, Bluetooth, Thread Protocol | Nuki Smart Lock Pro |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | Remote, Bluetooth, Passcode, Fingerprint, Physical Key | Aqara Smart Lock U200 |
| One-Time Password | YES | Keypad required | Aqara Smart Lock U200 |
| Periodic Password | YES | Keypad required | Aqara Smart Lock U200 |
| Anti-peep Password | YES | NO | Aqara Smart Lock U200 |
| Battery Life | 6 months | 6 months | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Emergency Fingerprint | NO | NO | Tie |
What the differences mean
Keypad and fingerprint
The Aqara Smart Lock U200 has its fingerprint reader and keypad built in, plus NFC and Apple Home Key. The Nuki Smart Lock Pro needs the Nuki Keypad for codes and the Keypad 2 for fingerprints, and neither NFC nor Home Key is on the list.
Door standard
The Aqara Smart Lock U200 goes over a US-style deadbolt, while the Nuki Smart Lock Pro is a retrofit for European cylinders that owners say needs a slightly protruding cylinder and a key that works from both sides.
Backup power
Both use a rechargeable battery rated for about 6 months, but only the Aqara Smart Lock U200 can fall back on AAA batteries or USB power. When the Nuki Smart Lock Pro runs flat, the physical key is the way in.
Connectivity
The Nuki Smart Lock Pro combines Wi-Fi, Bluetooth and Thread. The Aqara Smart Lock U200 relies on Thread for its smart home connection and needs a border router for remote control.
Weather and warranty
The Aqara Smart Lock U200 is rated IPX5 and the Nuki Smart Lock Pro carries no rating. Warranty goes the other way: two years for the Nuki, one for the Aqara.
Which one to buy if
- you want every way in on the lock at the lower price
The Aqara Smart Lock U200 includes fingerprint, keypad, NFC and Home Key without accessories.
- you live with a European cylinder door
The Nuki Smart Lock Pro is designed as a retrofit over that cylinder, with no cylinder swap.
- you worry about being locked out by a dead battery
The Aqara Smart Lock U200 can run on AAA batteries or USB power when its main battery is empty.
- your home has Wi-Fi but no Thread network
The Nuki Smart Lock Pro has Wi-Fi built in, so it does not depend on a Thread border router.
- + Price: $169.99
- + Weather Resistance: IPX5
- + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key
- - Rating: 2.6 vs 4.3
- - Warranty: 1 year vs 2 years
- + Rating: 4.3
- + Warranty: 2 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Thread Protocol
- - Price: €269.00 vs $169.99
- - Weather Resistance: NO vs IPX5
What owners say
Both groups of owners like a retrofit that keeps the existing key and a lock that talks to Apple Home and the other big platforms. The details diverge. Aqara Smart Lock U200 owners praise Apple Home Key with an Apple Watch, a fast fingerprint reader and a feature list they find generous for the money, but many report calibration that keeps failing, a confusing app, the need for a Thread hub, and locks that grind or stop locking reliably after about a year. Nuki Smart Lock Pro owners single out a strong, quick motor, fast charging and built-in Wi-Fi that they did not have to pay extra for, especially those coming from the Go. Their caveats are the cost once the fingerprint keypad is added, installation requirements for the cylinder and key, and a few batteries that stopped charging.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Aqara Smart Lock U200
- Nuki Smart Lock Pro
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Frequently Asked Questions
Which is better overall: Aqara Smart Lock U200 or Nuki Smart Lock Pro?
The Aqara Smart Lock U200 for most US deadbolts: it includes fingerprint, keypad, NFC and Apple Home Key, is rated IPX5 and typically costs less. The Nuki Smart Lock Pro is the better reviewed lock, with a two-year warranty and Wi-Fi, for European cylinder doors.
Nuki Smart Lock Pro vs Aqara U200: what is the main difference?
The Aqara Smart Lock U200 puts every entry method on the lock, while the Nuki Smart Lock Pro keeps the lock minimal and sells the keypad and fingerprint reader as accessories. They also fit different doors: US-style deadbolts for the Aqara, European cylinders for the Nuki.
Do the Aqara Smart Lock U200 and the Nuki Smart Lock Pro need a hub?
Both are Matter over Thread locks and need a Thread border router for that connection. The Nuki Smart Lock Pro also has Wi-Fi and Bluetooth, while owners of the Aqara Smart Lock U200 say a Thread hub is required before remote control works.
Which has better battery backup, Aqara Smart Lock U200 or Nuki Smart Lock Pro?
The Aqara Smart Lock U200. Both are rated for about 6 months per charge, but the Aqara can switch to AAA batteries or USB power, while the Nuki Smart Lock Pro lists no backup battery.
Who should buy the Aqara Smart Lock U200?
Apple Home households with a US-style deadbolt who want Home Key, fingerprint and guest codes on one lock at a lower price, and who have or will add a Thread border router.
Who should buy the Nuki Smart Lock Pro?
Owners of European cylinder doors who want a compact, well reviewed lock with Wi-Fi, hands-free auto-unlock and a two-year warranty, and who are fine adding a keypad later.
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