Aqara U300 Smart Lock – Fingerprint Keyless Entry, Apple Home Keys, Matter over Thread (Silver)

Overview

The Aqara U300 is a robust, silver-finished smart door lock designed for modern homes and small offices. Its zinc alloy body, paired with IPX4 protection, balances durable construction with a sleek, contemporary feel. Inside, the lock brings a thoughtful mix of biometric, code-based, and app-based access, all aimed at convenience without sacrificing security.

Apple Home Keys, Matter over Thread, and cross‑ecosystem compatibility

One standout feature is Apple Home Keys support. You can unlock by tapping your iPhone or Apple Watch, even if the device is low on power, and you can manage and share access directly through the Apple Home app. When paired with a Thread-enabled Matter Hub (such as Aqara M3), the U300 participates in smart automations and remote unlocking.

Thanks to Matter over Thread, the U300 also works with a wide range of ecosystems beyond Apple, including Google Home, Alexa, IFTTT, and Samsung SmartThings. This flexibility makes it easier to weave the lock into your existing smart home setup and routines.

Note: After adding the door lock to the Aqara Home app, only the administrator’s fingerprint or password can reset the lock, providing an extra layer of control for setup and security.

Unlocking options and ease of use

Identity and access for everyday life are covered with multiple unlocking methods:

• Fingerprint reader on the handle supports up to 25 unique fingerprints for quick entry
• One-time local passwords and periodic guest codes available when offline
• Aqara NFC card option for tap-to-unlock (card sold separately)

Modes for daily life

The U300 includes distinct modes to fit different scenarios:

• Passage Mode for high-traffic areas like offices or garages
• Auto-Lock Mode to enhance security after each entry
• Do Not Disturb Mode to mute sounds during late hours

Durability, power, and data security

Built to endure daily use, the lock uses a robust zinc alloy chassis and carries IPX4 water resistance. It operates across a wide temperature range from -22°F to 131°F. Four AA batteries power the lock for up to 10 months in typical use, and two USB-C ports offer backup power in emergencies. All sensitive data, including fingerprints, is stored locally with AES encryption to maximize security and privacy.