Winner
Data from Amazon and official Aqara and Nuki sites.
2026 verdict
Aqara Smart Lock U600 wins the 2026 matchup against Nuki Smart Lock Ultra, mainly on weather resistance, battery life, and Lock/Unlock system.
What pushes it ahead is weather resistance, battery life, and Lock/Unlock system, and One-Time password and periodic password keep the advantage from looking narrow. Choose Nuki Smart Lock Ultra only if rating matters more to you than the broader advantage from Aqara Smart Lock U600. For most setups, Aqara Smart Lock U600 is the smarter buy.
News by email
Still comparing? Get what's new by email
New releases and the smart home news worth knowing, in your inbox.
No spam. Unsubscribe in one click.
| Feature | Aqara Smart Lock U600 | Nuki Smart Lock Ultra | Winner |
|---|---|---|---|
| Rating | 4.4 | 4.5 | Nuki Smart Lock Ultra |
| Weather Resistance | IP65 | NO | Aqara Smart Lock U600 |
| Battery Life | 10 months | 6 months | Aqara Smart Lock U600 |
| Lock/Unlock System | Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key | Remote, Bluetooth, Passcode, Fingerprint, Physical Key | Aqara Smart Lock U600 |
| One-Time Password | YES | Keypad required | Aqara Smart Lock U600 |
| Periodic Password | YES | Keypad required | Aqara Smart Lock U600 |
| Connectivity | Bluetooth, Thread Protocol, Other | 2.4 GHz WiFi, Bluetooth, Thread Protocol | 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 |
| Doorbell | NO | NO | Tie |
Winner
£229.99
- + Weather Resistance: IP65
- + Battery Life: 10 months
- + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key
- - Rating: 4.4 vs 4.5
Currently unavailable on Amazon USA
- + Rating: 4.5
- - Weather Resistance: NO vs IP65
- - Battery Life: 6 months vs 10 months
Frequently Asked Questions
Which is better overall: Aqara Smart Lock U600 or Nuki Smart Lock Ultra?
Aqara Smart Lock U600 has the stronger overall profile in this comparison, especially for weather resistance, battery life, and Lock/Unlock system.
What is the biggest difference between Aqara Smart Lock U600 and Nuki Smart Lock Ultra?
Rating is one of the clearest differences: Aqara Smart Lock U600 lists 4.4, while Nuki Smart Lock Ultra lists 4.5.
Who should buy Aqara Smart Lock U600?
Choose Aqara Smart Lock U600 if your priority is weather resistance and battery life and that matters more than rating.
Who should buy Nuki Smart Lock Ultra?
Choose Nuki Smart Lock Ultra if your priority is rating and that matters more than weather resistance.
Full comparison table
Compare all 54 Door Locks side by side
You are looking at two of them. The full table lines up all Door Locks in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 54 Door Locks
- 55 specs compared
- 51 filters
EufyFamiLock E32
WyzePalm Lock
WyzeAuto-Lock Bolt v2
NukiSmart Lock Ultra
TP-LinkTapo DL100
EufyFamiLock E40
Philips4200 Series Smart Deadbolt with Door Lever
SwitchBotSwitchBot Lock Ultra Vision Combo
SchlageArrive
TP-LinkTapo DL130
ULTRALOQLatch 5 Pro
- Aqara
Smart Lock U600
SchlageEncode
ULTRALOQBolt SE
PhilipsWi-Fi Smart Deadbolt DDL242X
NukiSmart Lock Pro
EufySmart Lock C32
ULTRALOQU-Bolt Pro WiFi
EufySmart Lock C220
GoogleNest x Yale Lock
Air Quality MonitorsAqaraTVOC Air Quality Monitor
ButtonsAqaraCube T1 Pro
ButtonsAqaraWireless Mini Switch T1
ButtonsAqaraWireless Mini Switch WXKG11LM
CamerasAqaraCamera E1
CamerasAqaraCamera G100
CamerasAqaraCamera Hub G2H Pro
CamerasAqaraCamera Hub G3
CamerasAqaraCamera Hub G350
CamerasAqaraCamera Hub G5 Pro PoE
CamerasAqaraCamera Hub G5 Pro WiFi
DoorbellsAqaraDoorbell Camera G400 (Wired)
DoorbellsAqaraDoorbell Camera Hub G410
DoorbellsAqaraSmart Video Doorbell G4
Door LocksAqaraSmart Lock D200i
Door LocksAqaraSmart Lock N100 Zigbee Edition
Door LocksAqaraSmart Lock U100
Door LocksAqaraSmart Lock U200
Door LocksAqaraSmart Lock U300
Door LocksAqaraSmart Lock U400
