This product is only suitable for European standard mortise locks.
If Your Door Has an Interior Key
If Your Door Has an Interior Dial
You may choose to use the included EVA pad to enhance stability. Adjust the thickness by stacking the
The difference between the thickness of the stacked EVA pad and lock’s exterior cylinder should be
guaranteed to be within ±1mm.
Remove the dial or handle screws and select the appropriate adapter based on the shape of the lock
If the dial cannot be removed from the existing lock cylinder, replace the lock cylinder before installation.
Ensure the key thickness is ≤5mm and the key handle length is ≤
39mm when inserted into the lock.
Confirm that you can still unlock the door from the outside with
the key when the interior key is inserted. If the existing lock
cylinder doesn't meet these requirements, it may cause serious
issues. Please replace it with a compatible one before installation.
The U200 Lite is a sleek, easy-to-use, and easy-to-install lock, designed for simplicity, convenience,
and subtle elegance. Equipped with Matter over Thread support, it supports interoperability across a
broad range of smart home ecosystems*. The U200 Lite is designed for the convenience of keyless
access while maintaining advanced functionality. Unlike other smart locks, it operates using the
existing lock cylinder and does not require drilling or modifying the door.
1) Supports Euro profile and select Scandi cylinders.
2) Ensure your cylinder includes an Emergency Function*.
2. Additional Requirements:
1) Ensure you have a PH1 standard Phillips screwdriver available for installation.
2) For optimal installation results, we recommend following along with our installation video.
*To experience smart automations and other related functions, a 2-in-1 Matter Controller and Thread Border
Measure the thickness of the interior door lock cover and the height of the lock cylinder
protruding from the cover.
If the lock cylinder protrudes ≥3mm, you can secure the fixed plate using screws.
Use the provided hex key to tighten the three screws clockwise to secure the lock to the cylinder.
Over-tightening may affect the lock cylinder's performance, causing issues with locking and
If the lock cylinder protrudes ≤3mm, you can use the 3M adhesive method to secure the fixed plate, or
replace the lock cylinder before installation.
The difference between the thickness of the stacked EVA pad and lock’s external cylinder should be
Clean the area around the fixed plate and cylinder to remove dust. Peel off the yellow backing of the
3M adhesive and apply it to the fixed plate. Then peel off the red backing and attach it to the lock
cylinder. Press and hold the fixed plate for 60 seconds to enhance adhesive’s strength. To remove the
fixed plate, use a hairdryer to heat the adhesive, making it easier to detach.
Installing the Key or Adapter
Note: Adapters are consumable parts and may need replacement aer about 2 years. You can
purchase new adapters or download 3D files from the Aqara website to print your own. Aqara cannot
guarantee the strength and durability of self-printed adapters.
Note: Aer removing the fixed plate, pre-tighten the screws by turning them 10 times clockwise to speed up the
Aqara Rechargeable Battery × 1
Hexagon Screwdriver × 1Cylinder Adaptor Kit × 1EVA Foam × 3
NFC Sticker × 2Smart Lock U200 Lite × 1
*Check this website for compatibility issues: https://store-support.aqara.com/products/smart-lock-u200-lite-kit/
*An Emergency Function enables the cylinder to be unlocked from the outside using a key, even if another key is
already inserted on the inside.
Open the battery cover and secure the lock to the fixed plate with screws. Rotate the knob to ensure
smooth locking and unlocking. Adjust the screw tightness if necessary to avoid operational issues.
Insert the batteries, install the battery plate cover, and complete the lock installation. Next, proceed
with the keypad installation.
Quiet Lock and Unlock Mode
Download the Aqara Home app from the Apple App Store, Google Play, Xiaomi GetApps, Huawei App
Gallery or by scanning the provided QR code. Power on the device, bring your phone near it, open the
app, tap the "+" icon, select "Smart Lock U200 Lite," and follow the instructions.
Aer installation, users can calibrate the door lock using the Aqara Home app or directly on the lock.
Here's how to calibrate on the lock:
Two beeps during calibration indicate failure. The lock won't function properly if calibration is incomplete. If
calibration fails or there is a calibration issue, check if the mounting screws are too loose or tight and adjust them
Notion: If calibration issues persist, use the manual/automatic calibration feature in the Aqara Home app
1. Close the door and unlock it from the inside. Press and hold the Set button on the lock for 3
seconds to start calibration.
2. The lock will beep twice, then rotate to the unlock and lock positions. It will play a tune when the
To use the following features, add the lock in the Aqara Home app and enable the feature in settings:
1. Indoor Quiet Unlock: Slowly turns the door lock dial in the unlock direction for quieter unlocking.
2. Indoor Quiet Lock: Slowly turns the door lock dial in the lock direction for quieter locking.
1. You may need to calibrate the lock's open and close angles using the Aqara Home app before
2. Aer closing the door, the lock will attempt to lock automatically. Ensure the lock is secure
3. Aer extended use, you may need to recalibrate the lock's open and close angles.
Note: Customize Quiet functions using the Aqara Home app.
For the best experience, we recommend downloading and using the Aqara app. Please note that
the included NFC sticker can only be added through the Aqara app, and user experience may vary
depending on the phone model. For detailed instructions, please refer to the NFC tag guide in the
Precautions for Using the NFC Sticker:
Do not install it on a metal surface, as this may affect NFC performance.
Ensure that the NFC sticker aligns with your phone's NFC detection area when in use.
Make sure your phone supports NFC and that the NFC function is enabled.
To use the auto lock function, add the lock in the Aqara Home app and enable the auto lock feature
in settings. Please note:
Please long press reset button for 10 seconds to reset. Aer resetting, please delete the door lock in
We recommend using the Aqara Home app to access exclusive features and detailed settings such
as Manual Calibration, Auto Lock, Turn to Lock, Pull Spring Feature, and more.
Smart Lock U200 Lite can be charged using a type-C charging cable.
If you have any other questions about this product, you can find more product information on the
following website: https://store-support.aqara.com/products/smart-lock-u200-lite-kit/
If you want automatically lock the door when it remains unlocked for a specified amount of time，
you can do so in the Aqara Home app or other matter ecosystems;
Connecting to other Matter Ecosystems
1. Ensure you have a 2-in-1 Matter Controller and Thread Border Router for third-party ecosystems for
binding. Power on the door lock, press the Set button to enter pairing mode, then use the
third-party app to scan the Matter QR code or enter the setup code on the lock or user the manual.
2. To add the device to another ecosystem aer binding it to Matter, use the Matter app to share the
device with other platforms.
3. If you want to bind the device to another ecosystem and remove the current one, first remove the
device from the app, then reset the door lock or go to the local settings page to reset the Matter
ecosystem. The door lock will revert to its initial pairing mode. Refer to the Local Settings section of
the manual for reset instructions.
1. This product supports Aqara Magic Pair technology. Aer powering on the device, press the setup
button to enter pairing mode. The Aqara Home app will automatically detect the device. Select it
and follow the app instructions to complete setup.
2. Keep your phone close to the device during pairing. Ensure your phone is connected to the internet
and Bluetooth is enabled.
3. Follow the app instructions to scan the QR code on the product or enter the 8-digit pairing code to
confirm the addition of the device.
You can scan the following code for download Aqara Home app or check the Installation Video directly.
Note: Enjoy more exclusive features with the Aqara Home app without needing a hub, within Bluetooth range.
Note: In the early stages of the Matter ecosystem, different platforms support varying features. For example, some
platforms do not support adding door lock passwords. For a better user experience, we recommend adding the
device in the Aqara Home app.
Single press the Set Button
Long press (3s) the Set Button
1) Ensure your lock is only bound to one Matter ecosystem.
2)Long press (10s) the Reset Button
Online Customer Service: www.aqara.com/en/support.html
Manufacturer: Lumi United Technology Co., Ltd.
Address: Room 801-804, Building 1, Chongwen Park, Nanshan iPark, No. 3370,
Liuxian Avenue, Fuguang Community, Taoyuan Residential District, Nanshan District,
Installation Requirements
Smart Lock U200 Lite (Kit) User Manual
5 adapters are included, with four
adapters having different shapes
