How to Lock Eufy Smart Lock

Locking your Eufy smart lock is simple and can be done manually, via the Eufy app, voice commands, or automatic settings. This guide walks you through every method, troubleshooting tips, and best practices to keep your home secure.

Key Takeaways

Manual locking: Use the physical thumb turn or keypad for quick, reliable locking without Wi-Fi.
App-based locking: Control your Eufy smart lock remotely using the Eufy Security app from anywhere.
Voice commands: Lock your door hands-free with Alexa or Google Assistant integration.
Auto-lock feature: Set your lock to automatically engage after a set time for added convenience and security.
Battery and connectivity: Ensure your lock has sufficient battery and stable Wi-Fi for remote functions.
Troubleshooting: Common issues like unresponsive locks or app errors can often be fixed with a restart or re-pairing.
Security tips: Always verify the lock status and enable two-factor authentication for enhanced protection.

How to Lock Eufy Smart Lock: A Complete Step-by-Step Guide

If you’ve recently installed a Eufy smart lock or are just getting familiar with its features, you’re in the right place. Eufy smart locks are designed to make home security smarter, more convenient, and accessible. One of the most essential functions—locking your door—can be done in multiple ways, depending on your preference and situation. Whether you’re standing right in front of the door or miles away, Eufy gives you full control.

In this comprehensive guide, you’ll learn how to lock your Eufy smart lock using every available method: manually, through the app, with voice commands, and automatically. We’ll also cover troubleshooting tips, battery care, and security best practices to ensure your smart lock works flawlessly every time.

By the end of this guide, you’ll feel confident managing your Eufy smart lock like a pro—keeping your home secure with just a tap, a twist, or a voice command.

Understanding Your Eufy Smart Lock

Before diving into the how-to steps, it’s helpful to understand what makes Eufy smart locks unique. Eufy, a brand under Anker, focuses on privacy and local processing, meaning your data stays on your device—no cloud storage required. Their smart locks are compatible with Wi-Fi (via a hub or built-in), support keypad entry, and integrate with voice assistants like Alexa and Google Assistant.

Most Eufy smart locks, such as the Eufy Smart Lock Touch, Eufy Smart Lock C210, or Eufy Smart Lock E10, come with a physical thumb turn, a touchscreen keypad, and Bluetooth/Wi-Fi connectivity. This gives you multiple ways to lock and unlock your door.

Knowing your model helps, but the core locking methods are similar across devices. Whether you’re using a model with a fingerprint scanner or one with a numeric keypad, the principles remain the same.

Method 1: Locking Your Eufy Smart Lock Manually

The simplest and most reliable way to lock your Eufy smart lock is manually. This method doesn’t require Wi-Fi, an app, or batteries—just your hand.

Using the Physical Thumb Turn

The thumb turn is the small lever on the interior side of the lock. It’s the most straightforward way to lock your door when you’re inside.

Stand inside your home, facing the door.
Locate the thumb turn on the interior handle or lock body.
Turn the thumb turn clockwise (to the right) until it stops.
You’ll hear a soft click, indicating the deadbolt has engaged.

Tip: Always double-check that the bolt is fully extended by gently pulling on the door. If it resists, the lock is secure.

Using the Keypad (Exterior Locking)

If you’re outside and want to lock the door after closing it, the keypad is your best option—especially if you don’t have your phone or keys.

Close the door completely.
Wake up the keypad by touching any button or the screen (depending on your model).
Enter your personal access code.
Press the lock icon or the “#” key to confirm.
The lock will beep or flash to confirm it’s locked.

Example: If your code is 1234, you’d press “1 2 3 4 #” to lock the door.

Note: Some models allow you to lock by simply pressing the lock button after entering your code, while others require a specific sequence. Check your user manual for model-specific instructions.

Using a Physical Key (Backup Method)

Every Eufy smart lock comes with a physical key as a backup. While not the most convenient, it’s useful during power outages or if the lock malfunctions.

Insert the key into the keyhole on the exterior side.
Turn the key clockwise to lock the deadbolt.
Remove the key and store it safely.

Tip: Keep your physical key in a secure, accessible location—like a lockbox or with a trusted neighbor—just in case.

Method 2: Locking via the Eufy Security App

The Eufy Security app is the central hub for managing your smart lock. It allows you to lock and unlock your door remotely, view access logs, and manage user codes.

Downloading and Setting Up the App

If you haven’t already, download the Eufy Security app from the Apple App Store or Google Play Store. Create an account and follow the setup wizard to pair your smart lock.

Open the app and tap “Add Device.”
Select your smart lock model.
Follow the on-screen instructions to connect via Bluetooth or Wi-Fi.
Name your lock (e.g., “Front Door”) for easy identification.

Locking Your Door Through the App

Once your lock is connected, locking it remotely is just a few taps away.

Open the Eufy Security app.
Tap on your smart lock from the home screen.
You’ll see the current status (e.g., “Unlocked”).
Tap the lock icon to engage the deadbolt.
A confirmation message will appear, and you may hear a beep from the lock.

Tip: Enable push notifications in the app settings so you’re alerted every time the lock is used.

Using Geofencing for Automatic Locking

The app also supports geofencing, which can automatically lock your door when you leave home.

Go to the lock settings in the app.
Enable “Geofencing” or “Auto-Lock When Away.”
Set your home location and choose a radius (e.g., 100 meters).
When your phone leaves this area, the app will prompt you to lock the door—or do it automatically if enabled.

Note: Geofencing requires location permissions and may drain your phone’s battery slightly. Use it wisely.

Method 3: Locking with Voice Commands

If you have a smart speaker like an Amazon Echo or Google Nest, you can lock your Eufy smart lock using just your voice.

Setting Up Voice Control

First, link your Eufy account to your voice assistant.

For Alexa:

Open the Alexa app.
Go to “Skills & Games” and search for “Eufy Security.”
Enable the skill and log in with your Eufy account.
Discover devices. Alexa will find your smart lock.

For Google Assistant:

Open the Google Home app.
Tap “+” > “Set up device” > “Works with Google.”
Search for “Eufy Security” and link your account.
Assign the lock to a room (e.g., “Front Door”).

Using Voice Commands to Lock

Once set up, simply say:

“Alexa, lock the front door.”
“Hey Google, lock the smart lock.”

The lock will respond with a verbal confirmation (e.g., “Front door locked”) and a sound from the device.

Tip: You can also ask, “Is the front door locked?” to check the status.

Privacy Considerations

Voice commands are convenient, but be mindful of who’s around. Avoid using voice control in public or shared spaces where others might hear your commands.

Method 4: Using Auto-Lock for Hands-Free Security

The auto-lock feature is one of the smartest ways to ensure your door is always secure—even if you forget to lock it.

Enabling Auto-Lock in the App

Open the Eufy Security app.
Select your smart lock.
Tap “Settings” > “Auto-Lock.”
Toggle the feature on.
Choose a delay time (e.g., 30 seconds, 1 minute, 5 minutes).
Save your settings.

Now, every time you unlock the door, the lock will automatically re-engage after the set time.

Example: If you set auto-lock to 1 minute, the door will lock itself one minute after being unlocked—perfect for quick entries.

Customizing Auto-Lock Behavior

Some models allow you to customize when auto-lock activates:

Only when unlocked via app or keypad: Excludes manual unlocking.
Only during certain hours: Set auto-lock to run only at night.
Disable when someone is home: Use geofencing to pause auto-lock when family members are present.

Tip: Test the auto-lock feature a few times to ensure it works as expected. Adjust the delay if it’s too fast or slow.

Troubleshooting Common Locking Issues

Even the best smart locks can run into problems. Here’s how to fix the most common issues when locking your Eufy smart lock.

Lock Doesn’t Respond to App Commands

If the app says “Locking” but nothing happens:

Check your Wi-Fi connection. The lock needs a stable signal.
Ensure the Eufy HomeBase (if used) is powered and online.
Restart the app and try again.
If the issue persists, restart the lock by removing and reinserting the batteries.

Keypad Not Working

If the keypad is unresponsive:

Clean the screen with a dry cloth—dirt or moisture can interfere.
Check battery levels. Low power can affect keypad sensitivity.
Ensure the lock isn’t in “Tamper Mode” (indicated by a red light).
Re-enter your code slowly and clearly.

Voice Commands Not Recognized

If Alexa or Google Assistant doesn’t respond:

Verify the skill is enabled and linked.
Say the exact device name (e.g., “front door” not “the lock”).
Check microphone permissions on your smart speaker.
Re-link the account if needed.

Auto-Lock Not Activating

If the door doesn’t lock automatically:

Confirm auto-lock is enabled in the app.
Check that the delay time is set correctly.
Ensure the lock isn’t manually overridden (e.g., thumb turn stuck).
Update the app and lock firmware to the latest version.

Battery Drain Issues

Smart locks rely on batteries. If your lock dies frequently:

Use high-quality alkaline batteries (avoid rechargeables unless specified).
Check for firmware updates that improve battery efficiency.
Reduce app polling frequency in settings.
Replace batteries every 6–12 months, or when you hear low-battery alerts.

Best Practices for Secure Locking

To get the most out of your Eufy smart lock, follow these security tips:

Always Verify Lock Status

Don’t assume the door is locked. Use the app, a voice command, or a physical check to confirm.

Enable Two-Factor Authentication (2FA)

In the Eufy app, go to Account Settings > Security > Two-Factor Authentication. This adds an extra layer of protection against unauthorized access.

Manage User Codes Carefully

Create unique codes for family members, guests, or service providers. Delete or change codes when no longer needed.

Regularly Update Firmware

Eufy releases updates to improve performance and security. Check for updates monthly in the app under Device Settings.

Test Your Lock Weekly

Make it a habit to test all locking methods—manual, app, voice, and auto-lock—to ensure everything works.

Conclusion

Locking your Eufy smart lock doesn’t have to be complicated. Whether you prefer the simplicity of a thumb turn, the convenience of the app, the hands-free ease of voice commands, or the peace of mind from auto-lock, Eufy gives you flexible, reliable options.

By following this guide, you now know how to lock your Eufy smart lock in every scenario—from everyday use to troubleshooting unexpected issues. Remember to keep your batteries fresh, your app updated, and your access codes secure.

With your Eufy smart lock, you’re not just locking a door—you’re upgrading your home’s security, convenience, and smart living experience. So go ahead, lock it up, and rest easy knowing your home is protected.