Aqara Smart Lock U400
CSA Matter certified (certificate CSA25G1YMAT49048-24). Uses Thread, so it needs a Thread border router as well as your platform’s Matter controller.
At a glance: Matter certified: Yes, Dec 16, 2025 · Connectivity: Thread, Bluetooth · Works with: Apple Home, Amazon Alexa, Google Home and Samsung SmartThings · Thread border router: Needed (uses Thread)
- Works with
- Apple Home, Amazon Alexa, Google Home, Samsung SmartThings and Home Assistant (named by the maker)
- CSA certificate
- CSA25G1YMAT49048-24, certified Dec 16, 2025
- Network & hub
- Thread; needs a Thread border router as well as your platform’s Matter controller
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Amazon
Compare prices
2 stores
Check the model, region and pack size at the retailer. Prices and availability are confirmed there.
CSA Matter Certified
Certificate: CSA25G1YMAT49048-24Official Matter Certified device from Aqara. Connectivity: Thread, Bluetooth.
Specifications
- Brand
- Aqara
- Category
- Locks
- Protocols
- Thread, Bluetooth
- Certificate ID
- CSA25G1YMAT49048-24
- Certified
- Dec 16, 2025
- Firmware
- 3104
Ecosystem compatibility
Quick answers
- 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.
From this product’s catalog record, not hands-on testing. Editorial policy
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Aqara Smart Lock U400
CSA certified