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Aqara Smart Lock U200 vs Aqara Smart Lock U600

Full Smart Door Locks comparison in 2026

Updated October 2026
Data from the official Aqara site.
2026 verdict
Between Aqara's retrofit U200 and its newer multipoint U600, the Aqara Smart Lock U600 is the better buy overall.
Aqara Smart Lock U600
Winner
Aqara Smart Lock U600
£229.99
Buy on Amazon UK
It adds up to ten months of battery life on AA cells against roughly six on the U200's built-in pack, covers NFC cards as an extra connectivity option, and carries the stronger owner record. Both reach Matter with Thread and support Apple Home, Google Home, Alexa, SmartThings and Home Assistant, both offer fingerprint, keypad, NFC and Apple Home Key, and both need a Thread border router for remote access. The Aqara Smart Lock U200 is the cheaper of the two and the one to pick if you want a retrofit that keeps your existing exterior key, though owners report calibration trouble and reliability problems over time. Fit first: the U200 is a retrofit deadbolt, the Aqara Smart Lock U600 a UK multipoint panel.
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FeatureAqara Smart Lock U200Aqara Smart Lock U600Winner
Price$149.99£229.99Aqara Smart Lock U200
Rating2.74.4Aqara Smart Lock U600
Battery Life6 months10 monthsAqara Smart Lock U600
ConnectivityBluetooth, Thread ProtocolBluetooth, Thread Protocol, OtherAqara Smart Lock U600
Weather ResistanceIPX5IP65Tie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Lock/Unlock SystemRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyRemote, Bluetooth, Passcode, Fingerprint, NFC Tag, Apple Home Key, Physical KeyTie
One-Time PasswordYESYESTie
Periodic PasswordYESYESTie
Emergency FingerprintNONOTie
DoorbellNONOTie

What the differences mean

Retrofit or panel

The Aqara Smart Lock U200 mounts on the inside of a standard deadbolt and keeps your existing exterior key, which suits renters and anyone who does not want to change the outside of the door. The Aqara Smart Lock U600 replaces the handle plates on a UK multipoint door and keeps its locking body. The two fit different doors entirely.

Battery

The Aqara Smart Lock U600 runs up to ten months on four AA batteries. The Aqara Smart Lock U200 uses a built-in rechargeable pack rated around six months, with AAA backup. The U600 also warns on low battery twice, at 20 percent and 10 percent.

Connectivity extras

Both connect over Matter with Thread. The Aqara Smart Lock U600 adds Aqara NFC card support as an extra entry method, while the Aqara Smart Lock U200 lists no such extra connectivity option, so the U600 offers one more way in and one more reason it wins the connectivity row.

Owner record

The Aqara Smart Lock U600 is the newer, better-rated of the two. The Aqara Smart Lock U200 carries a wave of owner reports about finicky calibration and locks that grind or fail after roughly a year, which is the practical reason many buyers lean toward the U600 beyond the spec sheet.

Weather resistance

The Aqara Smart Lock U600's outer panel is IP65, so it is dust-tight and takes splashes and heavy rain. The Aqara Smart Lock U200 is IPX5, which handles water jets but carries no dust-tight rating. For a front door fully exposed to the weather, the U600 is the more protected of the two.

Which one to buy if

What owners say

Aqara Smart Lock U200 owners who get a clean install love the breadth: Apple Home and Apple Home Key are called snappy, especially unlocking with an Apple Watch, the fingerprint reader is fast, and the retrofit keeps their existing key. Running several units is not unusual, and the rechargeable battery with AAA backup and IPX5 rating earn mentions. But the same owners report real trouble: calibration that fails until the mount or tail piece is just right, an app they call convoluted, a required Thread hub before much works, and, most seriously, locks that grind, turn intermittent or fail after roughly a year, sometimes blamed on internal grease thickening.

Upgrading from the Aqara Smart Lock U200?

Moving from the Aqara Smart Lock U200 to the Aqara Smart Lock U600 is a step up the same family, but it also changes the door it fits. The U600 adds battery life, up to ten months on AA cells against roughly six on the U200's rechargeable pack, a slim UK multipoint panel format, and Aqara NFC card support, and it leaves behind the reliability and calibration complaints that shadow the U200. Owners of a working U200 on a standard deadbolt have little reason to switch. The U600 is for someone fitting a UK multipoint door, or replacing a U200 that never became dependable, and wanting the newer, better-liked model.

Frequently Asked Questions

Which is better overall: Aqara Smart Lock U200 or Aqara Smart Lock U600?

The Aqara Smart Lock U600, on longer battery life, an extra NFC card option and a stronger owner record. The Aqara Smart Lock U200 is the cheaper pick and the one to choose for a retrofit that keeps your existing exterior key. Their doors differ: the U200 is a retrofit deadbolt, the U600 a UK multipoint panel.

What is the biggest difference between the Aqara Smart Lock U200 and the Aqara Smart Lock U600?

The install. The Aqara Smart Lock U200 mounts on the inside of a standard deadbolt and keeps your exterior key, while the Aqara Smart Lock U600 replaces the handle plates on a UK multipoint door. That also sets the battery: rechargeable on the U200, up to ten months on AA cells on the U600.

Does the Aqara Smart Lock U200 keep my existing key?

Yes. The Aqara Smart Lock U200 is a retrofit that mounts on the interior side and keeps the original exterior cylinder, so your physical key still works alongside fingerprint, passcode, NFC, Bluetooth, the app and Apple Home Key.

How is the Aqara Smart Lock U200's reliability?

Mixed. Many owners are happy, but a notable number report the Aqara Smart Lock U200 grinding, turning intermittent or failing after roughly 12 to 16 months, sometimes linked to internal grease thickening or worn gears. Calibration can also fail until the mount or tail piece is adjusted. Buying from a returnable source is wise.

Who should buy the Aqara Smart Lock U200?

Renters and owners with a standard deadbolt who want a retrofit that keeps their key, broad Matter support across every major platform, Apple Home Key and several entry methods, and who are comfortable troubleshooting calibration and a Thread hub.

Who should buy the Aqara Smart Lock U600?

Owners of a UK multipoint front door who want the newer Aqara lock, with up to ten months of battery life, a fingerprint reader, keypad, NFC, Apple Home Key and door-position sensing, over Matter with Thread.

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