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Aqara Smart Lock U400

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Aqara Smart Lock U400

Smart Lock

Key Hardware & Protocol Features

Matter over Thread Support
Apple Home Key Compatibility
Biometric Fingerprint Reader
Backlit Keypad Access

Verified Deep-Link Handoffs (Registry, Retail & Corporate)

Official CSA Certification Registry → Amazon Smart Home Store → Best Buy Availability → Compare Retailers (Google Shopping) → Corporate Profile (Lumi United Technology Co., Ltd.) →

Aqara Corporate DNA & Headquarters

Full Brand Portfolio (4.4/5) →

Parent Company Lumi United Technology Co., Ltd.

Headquarters Location China

Corporate Structure Private

Linked CSA Certification Records

Aqara Smart Lock U400 - CSA-IOT

Certificate ID: aqara-smart-lock-u400-3 • Date: 12/16/2025 • Thread, Bluetooth

Official CSA Registry →

Aqara Smart Lock U400 - CSA-IOT

Certificate ID: aqara-smart-lock-u400-2 • Date: 06/02/2026 • Thread, Bluetooth

Official CSA Registry →

Ecosystem Strengths

Praised for extensive Matter and Apple HomeKit support, groundbreaking mmWave presence sensors, high Zigbee network stability, and a cost-effective, diverse sensor portfolio.

Considerations

Criticized for requiring proprietary hubs to unlock advanced features, regional server segmentation issues within the mobile app, and occasional firmware update friction.