How to Change Eufy Lock Code

Changing your Eufy lock code is simple, secure, and essential for home safety. This guide walks you through the process on all major Eufy smart lock models using the keypad, app, or voice commands. Stay in control of your access with confidence.

Key Takeaways

• Know your model: Different Eufy locks (like the H10, H20, or S330) have slightly different code-changing methods. Always check your model first.
• Use the EufySecurity app: The app is the easiest and most reliable way to manage access codes for most Eufy smart locks.
• Keep codes private: Never share your master code. Use temporary or guest codes for visitors to maintain security.
• Test after changing: Always test your new code to ensure it works before relying on it.
• Update regularly: Change your access codes every few months or after someone moves out or loses a key.
• Battery matters: Low battery can cause errors. Replace batteries if the lock behaves oddly during setup.
• Factory reset as last resort: If you’re locked out or forget the code, a factory reset can restore access—but you’ll lose all saved codes.

How to Change Eufy Lock Code: A Complete Step-by-Step Guide

Your Eufy smart lock is one of the smartest upgrades you can make to your home security. It lets you unlock your door with a code, your phone, or even your voice—no keys needed. But just like any security system, it’s important to keep your access codes up to date. Whether you’ve had a guest stay over, a contractor finish a job, or you simply want to refresh your security, knowing how to change your Eufy lock code is a must.

In this guide, we’ll walk you through the entire process of changing your Eufy lock code—whether you’re using a keypad model like the Eufy H10, a video-equipped lock like the S330, or a newer model like the H20. We’ll cover methods using the keypad, the EufySecurity app, and even voice commands. Plus, we’ll share tips to keep your lock secure and troubleshoot common issues.

By the end of this guide, you’ll be able to confidently manage your access codes, add temporary codes for guests, and keep your home safe with ease.

Why You Should Change Your Eufy Lock Code Regularly

Changing your Eufy lock code isn’t just about convenience—it’s about security. Think of your access code like a digital key. The more people who know it, the higher the risk of unauthorized entry. Here are a few key reasons to update your code regularly:

• After a guest leaves: If a friend, family member, or Airbnb guest had access, change the code once they’re gone.
• After a service call: Plumbers, cleaners, or repair technicians may have needed access. Once the job is done, update the code.
• Lost or stolen phone: If your phone (which may have the Eufy app) is lost, someone could potentially access your lock remotely.
• Moving in or out: When you move into a new home or someone moves out, reset all codes immediately.
• Routine security maintenance: Just like changing passwords, refreshing your lock code every few months is a smart habit.

Regular updates help ensure that only trusted people can enter your home. And with Eufy’s smart features, it’s easier than ever to manage who gets in—and when.

Before You Begin: What You’ll Need

Changing your Eufy lock code is simple, but a little preparation goes a long way. Here’s what you should have ready:

• Your Eufy smart lock model: Know whether you have the H10, H20, S330, or another model. This affects the steps.
• EufySecurity app installed: Download it from the App Store or Google Play if you haven’t already.
• Smartphone or tablet: You’ll use this to access the app and manage your lock.
• Wi-Fi connection: Most Eufy locks need Wi-Fi to sync with the app.
• Admin access: You must be the primary user or have admin rights to change codes.
• Fresh batteries (optional but recommended): If your lock is acting up, low battery could be the cause.

Once you’ve confirmed these items, you’re ready to get started.

How to Change Eufy Lock Code Using the EufySecurity App

The EufySecurity app is the easiest and most reliable way to change your Eufy lock code. It works with all modern Eufy smart locks and gives you full control over access. Here’s how to do it:

Step 1: Open the EufySecurity App

Launch the app on your smartphone or tablet. Make sure you’re logged into your account. If you’re not already connected to your lock, tap the “+” icon or “Add Device” to pair it. Most Eufy locks connect via Bluetooth and Wi-Fi, so ensure both are enabled on your phone.

Step 2: Select Your Lock

Once your lock is connected, it will appear on the home screen. Tap on the lock icon to open its control panel. You’ll see options like “Unlock,” “Lock,” “History,” and “Settings.”

Step 3: Go to Access Codes

Tap on “Settings” or the gear icon. Look for a section labeled “Access Codes,” “User Codes,” or “Keypad Codes.” This is where you can view, add, or delete codes.

Step 4: Add or Edit a Code

To change an existing code:

• Tap on the code you want to edit.
• Select “Edit” or “Change Code.”
• Enter the new 4- to 8-digit code.
• Confirm the code by entering it again.
• Tap “Save” or “Update.”

To add a new code (for a guest or family member):

• Tap “Add New Code.”
• Choose a name (e.g., “Guest,” “John,” “Cleaner”).
• Set the code and choose access times (e.g., only weekdays 9 AM–5 PM).
• Tap “Save.”

Step 5: Test the New Code

Once saved, go to your lock’s keypad and enter the new code. The lock should unlock (or lock, depending on its current state). If it works, you’re all set!

Tips for Using the App

• Use descriptive names: Instead of “Code 2,” name it “Dad” or “Weekend Guest” so you know who it’s for.
• Set time limits: For temporary access, use the scheduling feature to auto-disable codes after a certain date or time.
• Enable notifications: Turn on alerts so you’re notified whenever someone uses a code.

The app method is fast, secure, and gives you the most control. It’s the recommended way to manage your Eufy lock code.

How to Change Eufy Lock Code Using the Keypad (Manual Method)

Some Eufy models, like the H10, allow you to change codes directly from the keypad—no app needed. This is helpful if your phone is dead or you’re away from Wi-Fi. Here’s how:

Step 1: Enter Programming Mode

On the keypad, press and hold the “*” (asterisk) key for 3–5 seconds until you hear a beep or see a light flash. This puts the lock into programming mode.

Step 2: Enter the Master Code

Type in your current master code (the one you use to unlock the door). This verifies that you’re authorized to make changes.

Step 3: Select Code to Change

Press “1” to edit an existing user code, or “2” to add a new one. The lock will beep to confirm.

Step 4: Enter New Code

Type in the new 4- to 8-digit code. Press “#” to confirm. You’ll hear a beep if successful.

Step 5: Exit Programming Mode

Press “#” again or wait 10 seconds. The lock will beep and return to normal mode.

Example: Changing Code on Eufy H10

Let’s say your master code is 1234, and you want to change user code 2 to 5678:

• Press and hold * → Beep
• Type 1234 → Beep
• Press 1 → Beep (edit mode)
• Type 2 → Beep (select user 2)
• Type 5678 → Beep
• Press # → Double beep (success)
• Press # again to exit

Now test the new code: enter 5678 on the keypad. The door should unlock.

Important Notes

• Master code required: You must know the master code to make changes via keypad.
• Not all models support this: The S330 and newer models may require the app.
• Write it down (safely): If you change codes manually, keep a secure record in case you forget.

The keypad method is great for quick changes, but the app offers more features and better tracking.

How to Change Eufy Lock Code with Voice Commands (Alexa & Google)

If you’ve connected your Eufy lock to Alexa or Google Assistant, you can manage codes using voice commands—though with some limitations.

Using Alexa

First, make sure your Eufy lock is linked to your Alexa app. Then try:

• “Alexa, ask Eufy to add a new access code for John.”
• “Alexa, ask Eufy to change the code for Guest to 9876.”
• “Alexa, ask Eufy to delete the code for Cleaner.”

Alexa will guide you through the process with voice prompts. You’ll need to confirm the code verbally or via the Alexa app.

Using Google Assistant

Google Assistant support is more limited. You can usually only lock or unlock the door by voice. To change codes, you’ll likely need to use the EufySecurity app or keypad.

Limitations of Voice Control

• Security risk: Saying codes out loud can be overheard.
• Not all models supported: Older Eufy locks may not work with voice assistants.
• App still required for setup: You usually need the app to link your lock to Alexa or Google first.

Voice commands are convenient for locking and unlocking, but for changing codes, the app or keypad is safer and more reliable.

How to Add Temporary or Guest Codes

One of the best features of Eufy locks is the ability to create temporary codes. These are perfect for guests, dog walkers, or service workers. Here’s how:

Step 1: Open the EufySecurity App

Go to your lock’s settings and select “Access Codes.”

Step 2: Add a New Code

Tap “Add New Code” and enter a name like “Weekend Guest” or “Plumber.”

Step 3: Set Time Limits

Choose “Schedule” and set start and end times. For example:

• Start: Friday, 3:00 PM
• End: Sunday, 11:00 AM

The code will automatically deactivate after the end time.

Step 4: Save and Notify

Save the code and share it with your guest. You can even send it via text or email through the app.

Example: Airbnb Guest

You’re hosting a guest from Friday to Monday. Create a code named “Airbnb Guest” with access from Friday 3 PM to Monday 11 AM. Once they check out, the code stops working—no need to manually delete it.

Benefits of Temporary Codes

• No manual cleanup: Codes expire automatically.
• Track usage: See when the code was used in the app’s history.
• Peace of mind: You control exactly when and how long someone can enter.

Temporary codes are a game-changer for short-term access. Use them wisely!

Troubleshooting Common Issues

Sometimes, changing your Eufy lock code doesn’t go as planned. Here are common problems and how to fix them:

Issue: Lock Doesn’t Respond to New Code

Possible causes:

• Code wasn’t saved properly.
• Battery is low.
• Lock is offline.

Solution:

• Re-enter the code via the app or keypad.
• Replace batteries (use high-quality alkaline batteries).
• Check Wi-Fi and Bluetooth connection. Restart the app.

Issue: Can’t Access Programming Mode

Possible causes:

• Wrong master code.
• Keypad not responding.

Solution:

• Double-check your master code. If forgotten, use the app or factory reset.
• Clean the keypad with a dry cloth. Avoid moisture.

Issue: App Says “Device Offline”

Possible causes:

• Wi-Fi signal is weak.
• Lock is out of range.

Solution:

• Move closer to the lock or improve Wi-Fi coverage.
• Use a Wi-Fi extender near the door.
• Reconnect the lock in the app.

Issue: Forgot Master Code

Solution:

• Use the EufySecurity app to reset codes (if connected).
• If not, perform a factory reset (see below).
• Contact Eufy support for help.

How to Factory Reset Your Eufy Lock

A factory reset should be your last resort. It erases all codes and settings, returning the lock to its original state. Use it only if you’re locked out or suspect a security breach.

Steps to Factory Reset

• Eufy H10: Press and hold * and # for 10 seconds until you hear a long beep.
• Eufy S330: Use the app: Settings > Device Settings > Reset to Factory.
• Eufy H20: Remove the battery cover, press and hold the reset button for 5 seconds.

After reset, re-pair the lock with the app and set up new codes.

Warning

All access codes, schedules, and user data will be deleted. Only do this if absolutely necessary.

Best Practices for Eufy Lock Security

Changing your code is just one part of staying secure. Follow these tips to protect your home:

• Use strong codes: Avoid 1234, 0000, or birthdays. Mix numbers and avoid patterns.
• Limit code sharing: Only give codes to trusted people.
• Enable two-factor authentication: In the Eufy app, turn on 2FA for extra security.
• Check access logs: Review who unlocked the door and when.
• Update firmware: Keep your lock’s software up to date via the app.
• Secure your phone: Use a passcode or biometrics to protect the Eufy app.

Smart locks are powerful tools—but only as secure as the habits you build around them.

Conclusion

Changing your Eufy lock code is a simple but essential task for maintaining home security. Whether you use the EufySecurity app, the keypad, or voice commands, you now have the knowledge to manage access with confidence. Regular updates, temporary codes, and smart habits will keep your home safe and your mind at ease.

Remember: your lock is only as strong as your weakest code. Stay proactive, test your changes, and never hesitate to reach out to Eufy support if you need help. With the right approach, your Eufy smart lock will serve you reliably for years to come.