Smart Lock U300
FAQs
Compatible Locks: US Latch Lock
Handle Reversal Instructions: Remove the screws, rotate the handle 180°, and then tighten the screws. For the Outer Panel, the screws should be in the same position as before. For the Inner Panel, tighten the screws on the side closest to the handle. You can also watch the installation video for a more intuitive guide.
The U300 supports Matter over Thread, ensuring seamless interoperability across various smart home ecosystems.
- Aqara Home Users: No hub is needed, but the Aqara M3 Hub is recommended for enhanced features like remote control and automations.
- Matter Users: A Thread Border Router that supports Matter is required.
Binding to the Aqara M3 Hub allows for automations, remote lock/unlock, and more features in future updates.
Basic functions like locking and unlocking work with third-party ecosystems. However, we recommend using the Aqara Home app to access exclusive features and detailed settings such as passage mode, Night latch mode, and more.
- Already bound: Generate the Matter Code from the bound ecosystem, then enter pairing mode and follow the guidance to bind to another ecosystem.
- Not bound: Reset the device and try again.
A Thread Border Router that supports Matter is required.
- Standard Mode: Open Apple Wallet, select the door card, and tap iPhone/Watch close to the NFC area to unlock.
- Shortcut Mode: Set up in Apple Home, then unlock with Face ID or password and move the device close to the NFC area.
Follow these troubleshooting steps to resolve issues with the Aqara Smart Lock U300 and the Apple Home app:
- Update Firmware: Ensure U300’s firmware is updated and follow the recommended reset and setup procedures.
- After powering on the door lock, please press the lock's "Set" button, then use the Home app to scan the Matter QR code.
- You also can create a new "Home": If you encounter errors like “Cannot add personal code” during the Passcodes step in the Apple Home app, create a new Home in the app.
- Reset HomePod Mini: Reset a HomePod Mini and integrate it with the new Home to test the lock’s functionality. If successful, the issue may stem from the original Home configuration.
- If the pairing times out, please try resetting the door lock, and delete the Smart Lock U300 in the system "Settings>Matter accessory" on your phone/tablet, then try rebinding the Apple Home app.
- Migrate Home Setup: If problems persist, consider migrating to a new Home setup. Use the “Controller for HomeKit” app to back up and restore your HomeKit configuration, simplifying the process.
- Personal Code Length: Ensure the personal code for the lock is between 4-10 characters to ensure compatibility with the Home app.
- Thread Border Router Alert: If you receive a ‘Thread Border Router Required’ alert, refer to Apple’s support link: https://support.apple.com/en-us/102078
- Reset Door Lock: Refer to the electronic user manual for instructions on resetting the door lock.
- Check iPhone Model Compatibility: Ensure your iPhone model supports Home Key by checking: https://support.apple.com/guide/iphone/unlock-your-door-with-a-home-key-iph0dc255875/ios
For further assistance or questions, don’t hesitate to reach out.
A smartphone is required to connect the Smart Lock U300 to Aqara Home or other Matter ecosystems. After binding and configuration, it can be used directly.
- Aqara Home App Users: You can set periodic or one-time passwords via Bluetooth. Remote temporary password settings will be available in future with OTA, requiring the Aqara M3 Hub.
- Home App Users: You can set passwords remotely via the app. 2) If these steps do not resolve the issue, you may need to reset your door lock and set it up again in the Home app.
- Aqara Home Users: Long press Reset button for 3 seconds. Verify the admin password or fingerprint. If correct, the lock will reset and clear all data.
- Matter Users: Long press Reset button for 3 seconds
Please contact our customer service for assistance.
The Smart Lock U300 will alert the user when the battery of the keypad or lock is below 20%, at which point the lock can still work normally for about two weeks.
OR Use the physical key
Re-register your fingerprint as it may change over time. For children and the elderly, update fingerprints regularly or register multiple fingers. Ensure fingers are dry and clean.
After 10 incorrect attempts, the lock will disable password input for 30 minutes. Use inside unlock or Bluetooth unlocking to release. Adjust the lockout duration in “Settings” > “Failed Attempt Lockout.”
Aqara Home Users: Update firmware via the settings page. Keep your phone close during the update (15-20 minutes).
Matter Users: By the launch of the U300 lock, OTA updates via Apple Home are supported.
Note that Aqara Home updates more frequently and earlier than Matter and other ecosystems.
Aqara Home Users: Bind the lock to the Aqara Hub M3 for remote features.
Matter Users: Use a 2-in-1 Matter Controller and Thread Border Router.
Single press Set button (After binding): Enter the local settings page. If an Aqara administrator has been set, administrator credentials are required. If no Aqara administrator has been set, it will enter directly
No, it supports the Thread protocol, which is more stable and offers longer battery life.
Check if the lock is out of battery. If the issue persists after replacing the battery, contact customer service: support@aqara.com.
- Download the Aqara Home app, enter the Smart Lock U300 page, and complete the installation following the instructions.
- Scan the QR code for the installation video in the user manual.
- Scan the QR code for the detailed installation instructions in the electronic user manual.
- FCC
- Matter Certification
- CE
- CA65
- IPX4
Your disassembly of Smart Lock U300 is construed as your agreement to waive the maintenance service of Aqara. We do not recommend replacing the lock cylinder yourself.
The touch panel is made of Glass, providing superior transparency. The outdoor panel is made of zine alloy with frosted coating, providing increased hardness. The indoor panel is made of plastic and covered by metallic coating, providing effective protection from scratches and residue.
The Aqara Smart Door Lock U300 is equipped with a 60/70mm Latch.
The Aqara Smart Door Lock U300 currently only supports lock status detection, including locked, unlocked, and lock failure. Future OTA may support door status detection. Please pay attention to Aqara updates.
The lock cylinder of the Aqara Smart Door Lock U300 is compatible with most wooden doors on the market, whose thickness is between 35mm - 55mm.
No. The Aqara Smart Door Lock U300 supports all door-opening directions, including left/right and inward/outward.
The Aqara Smart Door Lock U300 front panel (Keyboard) is IPX4 waterproof, but the indoor panel can only be used indoors.
Outer Panel: -30 °C ~ +55 °C(-22 °F ~ +131 °F)
Inner Panel: -10 °C ~ +55 °C(14°F ~ +131 °F)
0 ~ 93% RH
It is powered by 4 LR6 AA Batteries.
The average battery life is 10 months, but varies according to different working environments and conditions. Battery performance declines in low-temperature environments. Battery life was measured by the Aqara laboratory with LR6 AA batteries, and simulated with 10 openings under 25℃.
- If you are outside, you can supply power to the lock through the emergency USB-C charging port at the button of the outer panel.
- If you are inside, directly replace the LR6 AA batteries.
No, the Aqara Smart Door Lock U300 is well-designed to defend itself from electromagnetic interference and has undergone rigorous electromagnetic compatibility tests. Tesla Coil is a type of ultra-high voltage discharge equipment. Its electromagnetic induction may damage precision electronic devices within a certain radius, but it does not affect the normal operation of the Aqara Smart Door Locks.
The Aqara Smart Door Lock U300 supports 9 ways of unlocking:
- Fingerprint
- Password (ordinary, one-time, periodic)
- HomeKit / Siri (Bluetooth, Remote, Apple Home Key)
- Aqara Home (Bluetooth, Remote)
- Google Home / Google Assistant (Remote)
- Amazon Alexa/ Alexa (Remote)
- NFC Card (Aqara and Mifare M1 Card)
- Integration unlock via Aqara G4 doorbell(Requires future OTA support)
- Mechanical Key
*Aqara Home app and HomeKit support Bluetooth short-range unlocking.
*Aqara Home app, HomeKit, Google Home, and Alexa support remote unlocking, on condition that there is a supporting matter hub at home.
*Siri/Google Assistant/Alexa voice control is effective, but an Apple Hub is required for Siri and an Google/Alexa Hub is required for Google Home and Alexa.
The lock can be unlocked through apps (Aqara Home/Apple Home/Google Home/Alexa) OR unlocked with a mechanical key. After a few minutes, all verification functions return to normal. You also can change the setting through Aqara Home app.
The mechanical key is usually used for emergency situations when the lock can not be unlocked by normal verification methods (fingerprint/password/mobile app/NFC/HomeKey). It is recommended to keep the key in your car or office, just in case.
The Aqara Smart Door Lock U300 supports up to 75 passwords at the same time, including ordinary and temporary periodic passwords. In addition, up to 8 sets of one-time passwords can be generated per hour.
Aqara allows you to set a 6-10 digit password, and if the Matter platform allows setting a 4-10 digit password, the U300 also supports it.
Yes, a temporary one-time password can be generated through the Aqara Home app.
The Aqara Smart Door Lock U300 supports up to 50 fingerprints.
Install the Aqara Home app, after the lock is added and connected to the app, set the fingerprint according to app prompts. You can also press the set button and follow the voice prompts for local fingerprint setup.
If the Aqara Smart Door Lock U300 prompts an unsuccessful fingerprint entry, make sure that the finger used for the fingerprint is dry and the fingerprint is not damaged substantially. It takes seven times to collect a complete fingerprint. Please fully press the finger on the identification area and try to change the input angle according to the voice/Aqara Home app prompts (avoid repeated inputs at the same angle). For a better unlocking experience, it is recommended to enter the print of the thumb of the commonly used hand.
Please make sure the finger is not stained or wet, press the finger fully onto the identification area, and try again. If repeated failure results in fingerprint verification being locked out, use a password, delete the old fingerprint on the Aqara Home app, and set up a new one. Multiple groups of fingerprints can be set to avoid verification failure due to problems on a single finger.
The fingerprint module unlocks after identifying, comparing, and verifying the collected fingerprint pattern. The success rates of fingerprint unlocking are affected by an elder's serious fingerprint wear and children's shallow/incomplete fingerprint patterns. Password and NFC/HomeKey are recommended in such cases.
After unlocking the door, many traditional electronic locks of other brands will have their latch bolts relocked five to ten seconds later. During this period, intruders can open the door by pressing the handle, which is a security hazard. Aqara Smart Door Lock U300 can automatically lock immediately, preventing intruders unlocking and tailing effectively.
Bluetooth 5.0 provides increased connection speed, stability, and power efficiency.
Since Bluetooth usually supports a 1-to-1 connection, the Aqara Smart Door Lock U300 can only be connected to one mobile phone at a time.
Install the Aqara Home app on your phone and add the lock to it. Click the unlock icon on the home page of the app and then press the handle to unlock it.
The initial admin account is set when the lock is added to the Aqara Home app for the first time. The admin account is required to enter the local setting mode. The initial admin account can add more admin accounts on the Aqara Home app.
In the Aqara Home app, there are ordinary permissions and admin permissions. Ordinary users are permitted to use normal unlocking functions.
The Aqara Smart Door Lock U300 supports up to 50 accounts: 50 admin accounts OR 49 ordinary accounts and one admin account.