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Door Locks · Head to head

Aqara Smart Lock U400 vs SwitchBot Lock

Full Smart Door Locks comparison in 2026

Updated September 2026
Data from Amazon and official Aqara and SwitchBot sites.
2026 verdict
Aqara Smart Lock U400 wins on weather resistance, connectivity and password features.
Aqara Smart Lock U400
Winner
Aqara Smart Lock U400
$269.99
Buy on Amazon USACheck price
Its outer panel is rated IP65 against dust and heavy rain, it pairs Bluetooth and Thread with UWB ultra-wideband and NFC, and it includes one-time, periodic and anti-peep passwords on its built-in touchscreen keypad. SwitchBot Lock answers with a higher owner rating, broader accessory-driven unlock options (keypad, fingerprint and even face recognition via the Vision keypad) and its famous adapter kit that fits almost any cylinder in minutes, though remote access, Matter and most platforms require a SwitchBot Hub. Both keep a physical key and auto-lock when the door closes. As a flagship keyless door, the Aqara Smart Lock U400 is the stronger product; the SwitchBot Lock remains the flexible budget retrofit for awkward doors.
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FeatureAqara Smart Lock U400SwitchBot LockWinner
Rating4.13.5Aqara Smart Lock U400
Weather ResistanceIP65NOAqara Smart Lock U400
ConnectivityBluetooth, Thread Protocol, OtherBluetoothAqara Smart Lock U400
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, Face Recognition, NFC Tag, Apple Home Key, Physical KeySwitchBot Lock
One-Time PasswordYESNOAqara Smart Lock U400
Periodic PasswordYESNOAqara Smart Lock U400
Anti-peep PasswordYESNOAqara Smart Lock U400
Battery Life6 months6 monthsTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Emergency FingerprintNONOTie
DoorbellNONOTie
Winner
Aqara

Aqara Smart Lock U400

$269.99
Buy on Amazon USACheck price
  • + Rating: 4.1
  • + Weather Resistance: IP65
  • + Connectivity: Bluetooth, Thread Protocol, Other
  • - Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical Key vs Remote, Bluetooth, Passcode, Fingerprint, Face Recognition, NFC Tag, Apple Home Key, Physical Key
SwitchBot

SwitchBot Lock

Price unavailable right now
Buy on Amazon UKCheck price
  • + Lock/Unlock System: Remote, Bluetooth, Passcode, Fingerprint, Face Recognition, NFC Tag, Apple Home Key, Physical Key
  • - Rating: 3.5 vs 4.1
  • - Weather Resistance: NO vs IP65

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U400 or SwitchBot Lock?

Aqara Smart Lock U400 wins with its IP65 outer panel, UWB hands-free unlocking, built-in fingerprint, keypad and NFC, and guest password features. SwitchBot Lock counters with a higher owner rating and unmatched cylinder compatibility at a lower entry cost.

What is the biggest difference between Aqara Smart Lock U400 and SwitchBot Lock?

Built-in versus modular. The Aqara ships complete with exterior biometrics, keypad and UWB. The SwitchBot is a bare Bluetooth motor whose keypad, fingerprint, face recognition, remote access and Matter support all arrive via separately purchased accessories and hubs.

What does each need for remote control?

The Aqara Smart Lock U400 needs a Thread border router (an Aqara hub also unlocks Google Home and Alexa). The SwitchBot Lock needs a SwitchBot Hub for remote access and voice assistants, or a Hub 2 for Matter and HomeKit.

How do batteries compare?

The Aqara Smart Lock U400 runs about 6 months on its rechargeable pack with a USB-C emergency port. The SwitchBot Lock runs about 6 months on two CR123A cells, which some owners find drain faster, and it needs recalibration after each change.

Who should buy Aqara Smart Lock U400?

Choose Aqara Smart Lock U400 for a complete, weatherproof flagship door, especially with iPhone or Apple Watch where UWB approach-unlock and Home Key shine.

Who should buy SwitchBot Lock?

Choose SwitchBot Lock if your cylinder defeats other locks or you want to start cheap and add keypad, fingerprint or hub features over time. Its adapters, quick install and higher rating make it a dependable retrofit.

Full comparison table

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