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Aqara U400 vs U200: Which Matter-over-Thread Lock?

Aqara U400 vs U200 from Aqara’s pages and our records: door fit, UWB hands-free unlock, fingerprint, battery, CSA certificates and platforms.

UWB hands-free unlock versus a retrofit kit with a fingerprint keypad

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Quick verdict

Both Aqara locks join Matter over Thread, carry a CSA certificate and work with Apple Home, Alexa, Google Home and SmartThings, per Aqara. Pick the U400 for Ultra-Wideband unlock as you approach with a supported iPhone or Apple Watch; pick the U200 kit for its fingerprint keypad and fit guide that covers supported European cylinders.

Which one for your home

  • You want the door to unlock as you walk up with an iPhone: Aqara U400

    Aqara says the U400 uses Ultra-Wideband (UWB) to unlock as you approach with select iPhone and Apple Watch models; that needs a Thread-enabled Apple home hub.

  • Your door has a European cylinder: Aqara U200

    Aqara’s U200 fit guide covers US single-cylinder deadbolts and supported European cylinders; Aqara lists the U400 for single-cylinder deadbolts.

  • You want a fingerprint reader: either one

    The U400 has a built-in fingerprint reader (up to 50 fingerprints, per Aqara); the U200 kit comes with a fingerprint keypad.

  • You use Apple Home, Alexa, Google Home or SmartThings: either one

    Aqara names all four for both locks; both join Matter over Thread.

Side by side

The first rows repeat each product page, read from its catalog record. The rest quote the maker or the record, with the source linked in each cell. Prices load in your browser only when a store price was checked in the last 48 hours or an Amazon price was retrieved in the last 24 hours.

WhatAqara U400Aqara U200
Current price
See price at Amazon
See price at Amazon
CSA Matter certificateCSA25G1YMAT49048-24 (Dec 16, 2025)CSA2438DMAT43584-24 (Jul 1, 2024)
Matter network (its record)ThreadThread
Needs a Thread border router?Yes, plus a Matter controllerYes, plus a Matter controller
Platforms the maker namesApple Home, Amazon Alexa, Google Home, Samsung SmartThingsApple Home, Amazon Alexa, Google Home, Samsung SmartThings
Stores we linkAmazon, AqaraAmazon, Aqara
Door fitSingle-cylinder deadbolt locks. Aqara Smart Lock U400 product page, read 2026-10-13US single-cylinder deadbolt or a supported European cylinder; check Aqara’s fit guide. Source
Hands-free unlockUWB unlock as you approach with select iPhone and Apple Watch models; needs a Thread-enabled Apple home hub. Aqara Smart Lock U400 product page, read 2026-10-13Not described in its record or buying notes. Its catalog record
FingerprintBuilt-in reader, up to 50 fingerprints. Aqara Smart Lock U400 product page, read 2026-10-13Kit with a fingerprint keypad (4 AAA keypad batteries). Source
BatteryRechargeable; up to 6 months per charge, per Aqara. Aqara Smart Lock U400 product page, read 2026-10-13Rechargeable lock battery. Source

Which to choose when

Choose Aqara U400 when…

Choose the Aqara U400 when you want the door to unlock as you walk up: Aqara says its Ultra-Wideband unlock works with select iPhone and Apple Watch models and needs a Thread-enabled Apple home hub. It fits single-cylinder deadbolts, has a fingerprint reader for up to 50 fingerprints and carries CSA certificate CSA25G1YMAT49048-24 (December 2025).

Choose Aqara U200 when…

Choose the Aqara U200 kit when you want a retrofit lock with a fingerprint keypad, or your door has a supported European cylinder: Aqara’s fit guide covers US single-cylinder deadbolts and supported European cylinders. The kit has a rechargeable lock battery and four AAA keypad batteries, and carries CSA certificate CSA2438DMAT43584-24 (July 2024).

What the catalog records show

The same answers each product page gives, from its catalog record and verified store links; a platform is named as confirmed only where the maker’s own site names it.

Aqara Smart Lock U400

Is the Aqara Smart Lock U400 Matter certified?
Yes. MatterCatalog matches it to CSA Matter certificate CSA25G1YMAT49048-24, certified Dec 16, 2025.
Which smart home platforms does the Aqara Smart Lock U400 work with?
The maker’s own site names Apple Home, Amazon Alexa, Google Home and Samsung SmartThings. Controls can differ from app to app.
Does the Aqara Smart Lock U400 use Thread or Wi-Fi?
Thread. Its catalog record lists Thread, and Matter devices that use Thread need a Thread border router in the home, in addition to your platform’s Matter controller.
Where can I buy the Aqara Smart Lock U400?
MatterCatalog has verified store links for it at Amazon and Aqara. Check the current price, model and pack size at the store.

Aqara Smart Lock U200 Kit with Fingerprint Keypad, Matter over Thread, Apple Home Key

Is this lock Matter certified?
Yes. MatterCatalog matches it to CSA Matter certificate CSA2438DMAT43584-24, certified Jul 1, 2024.
Which smart home platforms does this lock work with?
The maker’s own site names Apple Home, Amazon Alexa, Google Home and Samsung SmartThings. Controls can differ from app to app.
Does this lock use Thread or Wi-Fi?
Thread. Its catalog record lists Thread, and Matter devices that use Thread need a Thread border router in the home, in addition to your platform’s Matter controller.
Where can I buy this lock?
MatterCatalog has verified store links for it at Amazon and Aqara. Check the current price, model and pack size at the store.
What the maker says you need
Matter setup requires a compatible Matter controller and Thread border router, sold separately. Before buying, check Aqara’s door, cylinder and adapter fit guide. Supported Euro cylinders must allow unlocking from outside with a key inserted inside.
Model and package
Silver EL-D02E · 1 lock with fingerprint keypad, rechargeable lock battery and 4 AAA keypad batteries. Check US single-cylinder deadbolt or supported European-cylinder fit. The EL-D02D offline kit’s NFC card, AA battery adapter and replacement panel are not included.

What they share

  • Both have a CSA Matter certificate on file.
  • Both join Matter over Thread, so both need a Thread border router and a Matter controller.
  • Aqara names Apple Home, Amazon Alexa, Google Home and Samsung SmartThings for both.
  • Both have US store links on their product pages.

Product, category and brand pages

Best Matter Smart Locks 2026 →Aqara U100 vs U200: Which Smart Lock Should You Buy? →Aqara U200 vs SwitchBot Lock Pro: Which Matter Retrofit Lock? →Aqara U200 vs Kwikset Halo Select: Which Matter Smart Lock? →Aqara U200 vs SwitchBot Lock Vision: Which Matter Smart Lock? →

Before you buy

  • Door fit: check Aqara’s fit guide for your door, cylinder and adapter before buying either lock.
  • Thread: both need a Thread border router and a Matter controller, sold separately. UWB unlock on the U400 needs a Thread-enabled Apple home hub.
  • Phone: UWB unlock works with select iPhone and Apple Watch models only. Check yours with Aqara.
  • Contents: the U200 offer is the kit with a fingerprint keypad; check what the U400 box includes at the store.

Common questions

What is the difference between the Aqara U400 and U200?
The U400 adds Ultra-Wideband unlock as you approach with select iPhone and Apple Watch models and has a built-in fingerprint reader; the U200 is a kit with a fingerprint keypad whose fit guide covers supported European cylinders. Both join Matter over Thread and both have a CSA certificate on file.
Does the Aqara U400 need a hub?
Aqara says a Thread-enabled Matter controller of your platform is required, and UWB unlock needs a Thread-enabled Apple home hub. It does not name an Aqara hub as a requirement.
How does the U400 compare with the U100?
MatterCatalog compares the U100 with the U200 on a separate page. The U400 and U200 both carry their own CSA certificate; check that page for the U100.

How this page was made

We have not performed hands-on testing. This page is built from MatterCatalog’s catalog records: each product’s CSA certificate and its scope, the network and platforms its record lists, the maker’s setup requirements and the stores with a verified link. It does not rank performance, reliability or price; check the current price, model and pack size at the store. Editorial policy

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