Installation requirements may vary depending on the product model. Before purchasing, please confirm your door thickness, lock case dimensions, and existing borehole layout.

If you’re unsure whether your door is compatible, simply send us photos of the front, back, side of the door, and the door frame. Our SGUDA team will be happy to help you verify compatibility.

Can I install a SGUDA smart lock by myself?

Some SGUDA smart lock models are designed for DIY installation. Before you begin, please refer to our Installation Guide for detailed instructions.

Depending on your door type and existing lock, additional drilling or modifications may be required. If you are unsure about the installation process, we recommend seeking assistance from a professional installer.

Can I replace my existing smart lock with a SGUDA smart lock?

In most cases, yes. However, compatibility depends on factors such as the existing boreholes, door thickness, and lock case dimensions.

To ensure compatibility, please send us photos of your current lock and door, and our team will help evaluate your installation requirements.

Product & App

What unlocking methods do SGUDA smart locks support?

Depending on the model, SGUDA smart locks may support Fingerprint, Passcode, RFID Card, SGUDA App, Bluetooth, and Mechanical Key.

Please refer to the specifications on each product page for the available unlocking methods.

Will my SGUDA smart lock still work during a power outage?

Yes. SGUDA smart locks are powered by batteries, so a power outage will not affect normal unlocking functions.

However, features that require an internet connection, such as remote access, may be unavailable if your home network equipment loses power.

Will I receive a low battery warning?

Yes. When the battery level becomes low, you will receive a notification through the SGUDA App (Wi-Fi connection required), or the lock will sound a low-battery warning after unlocking.

Once the warning appears, the lock can typically operate for another 5–7 days. We recommend replacing the batteries as soon as possible using alkaline batteries only.

If the batteries become completely depleted before replacement, you can still unlock the door using the Mechanical Key.

What should I do if the batteries are completely depleted?

Depending on the model, you can unlock the door using the Mechanical Key or temporarily power the lock through the USB Type-C emergency power port.

Please refer to your product’s user manual for detailed instructions.

What type of batteries should I use?

We recommend using alkaline batteries from the same brand, such as Panasonic or Energizer.

Do not mix different battery brands or old and new batteries.

Please note: Battery leakage is not covered under the product warranty.

If you notice unusually high battery consumption, please check your Wi-Fi signal strength. Poor Wi-Fi connectivity may cause the lock to repeatedly reconnect, increasing battery usage. We recommend turning off Wi-Fi until the signal has been improved.

Do I need to set up my lock again after changing my phone?

No. Simply sign in to the SGUDA App using your existing account on your new device.

Your lock information and account settings will remain unchanged, although Bluetooth pairing or certain security verifications may need to be completed again.

Which features require an internet connection?

Depending on the model, the following features require Wi-Fi or internet access:

Remote Lock / Unlock
Push Notifications
Cloud Activity Log
Remote User Management

Basic unlocking methods such as Fingerprint, Passcode, RFID Card, and Mechanical Key work without an internet connection.

Where can I download the SGUDA App?

The SGUDA App is available on both the Apple App Store and Google Play.

How do I register a SGUDA account?

After downloading the SGUDA App, you can quickly sign up using your Google, Facebook, or Apple account, or register with your email address.

How do I reconnect or change my Wi-Fi?

Please complete the following steps while standing near the smart lock.

1. Disconnect the current Wi-Fi

Open Lock Settings → Lock Wi-Fi → Disconnect Wi-Fi.

2. Connect to a new Wi-Fi network

After disconnecting, select your new Wi-Fi network from the same screen and enter the password.

3. Test the Wi-Fi connection

Wait 5–10 seconds after connecting.

Go to Lock Settings → Test Wi-Fi to confirm the connection.

Troubleshooting

If an exclamation mark (!) appears beside the Wi-Fi name, the connection was unsuccessful. This usually indicates a weak Wi-Fi signal. Please move your router closer or improve the signal strength.
If the issue persists, remove and reinstall the batteries to restart the lock before trying again.

How do I reset the lock after a guest checks out?

Please refer to your SGUDA User Manual and follow the instructions for Unlink U-Lock and Reset U-Lock.

If I lose or replace my phone, do I need to set up the lock again?

No. Simply log in to the SGUDA App using your existing account on your new phone.

Your lock settings, users, and permissions will remain unchanged.

How do I create a temporary passcode?

1. Open the SGUDA App and tap User Access.

2. Select + Add User.

3. Choose Passcode Only.

4. Enter the required user information.

5. Select Passcode Access.

6. Choose Schedule.

7. Set the access period.

8. Save the passcode and share it with your guest.

Are SGUDA smart locks resistant to electric shock?

Yes. SGUDA smart locks feature a resistive LED touchscreen keypad designed to help protect against high-voltage electric shock attacks.

Which features require Wi-Fi?

The following features require an active Wi-Fi connection:

Keyless Access
Real-time Push Notifications
Remote Passcode Management

Which settings require Bluetooth?

Your phone must be connected to the lock via Bluetooth.

The following settings require a Bluetooth connection:

Lock Settings
Sound Settings
Light Settings

Troubleshooting

Installation

If installation feels difficult, the screws may be overtightened or the door preparation may be incorrect. Always verify that the lock operates smoothly before installing the batteries.
Do not insert the batteries until the lock has been fully installed, as this may cause abnormal operation.

High Battery Consumption

Poor Wi-Fi signal strength may increase battery usage because the lock repeatedly attempts to reconnect. Turn off Wi-Fi until the signal improves.
Always use alkaline batteries from the same brand. Do not mix different brands or old and new batteries.
Battery leakage is not covered under warranty.
Bluetooth communication works within approximately 2 meters (6.5 ft). Keeping your phone continuously within Bluetooth range may reduce battery life.
After receiving a low-battery warning, the remaining operating time is typically about one month, depending on usage and battery quality. We recommend replacing the batteries as early as possible.

Warranty & Support

Are SGUDA products covered by a warranty?

Yes. SGUDA products are covered by a limited warranty.

The warranty period, coverage, and applicable terms may vary depending on the product and your place of purchase. Please refer to the warranty policy provided with your product for complete details.

How can I contact SGUDA if my product has an issue?

You can contact us through the contact information available on the SGUDA website or our official LINE account.

To help us resolve your issue more quickly, please prepare the following information:

Proof of Purchase
- Purchase date
- Purchaser’s name
- Or a screenshot of your Warranty Registration in the SGUDA App
Purchase Information
- Where you purchased the product (SGUDA Official Website, online retailer, or physical store)
Product Photos
- A clear photo of the lock with the battery cover removed
Firmware Information (if applicable)
- A screenshot of the lock firmware information from the SGUDA App
Wi-Fi Router Model
- This helps us diagnose network-related issues.

How do I find my Warranty Registration?

1. Open the SGUDA App. Tap the Menu in the upper-left corner.

2. Select Warranty Registration.

3. Send us a screenshot showing the complete registration information.

How do I find the lock firmware information?

1. Open the SGUDA App.Tap Settings.

2. Select Device Information.

3. Send us a screenshot of the firmware information.

What product photos should I provide?

Please remove the battery cover and send us a clear photo of the inside of the lock. This helps our support team identify the product and diagnose the issue more efficiently.

Is battery leakage covered under the warranty?

No. Damage caused by battery leakage, improper battery use, or batteries that do not meet the recommended specifications is not covered under the product warranty.

To ensure optimal performance, always use the recommended alkaline batteries specified in the product manual.

About SGUDA

Is SGUDA a Taiwan brand?

Yes. SGUDA is a Taiwan smart lock brand.

With more than 50 years of lock manufacturing experience, SGUDA integrates product development, engineering, manufacturing, and quality management to deliver reliable and innovative smart lock solutions.

Are SGUDA smart locks secure?

Yes. SGUDA smart locks combine mechanical engineering, electronic control systems, and smart connectivity to provide secure and reliable access.

Each product undergoes rigorous testing and quality control. Security features, certifications, and specifications may vary by model. Please refer to the individual product page for detailed information.

Can't find the answer you're looking for?

If your question isn’t covered in this FAQ, please contact the SGUDA Support Team through our official LINE account or the Contact Us page.

We’ll be happy to assist you with product selection, installation, troubleshooting, or any other questions.