1. Product Overview
The eufy Security S330 Video Smart Lock integrates multiple security features into a single unit, offering enhanced convenience and protection for your home. It features a 2K HD camera, a video doorbell, and a fingerprint recognition system for keyless entry.

Figure 1: Overview of the eufy Security S330 Video Smart Lock system, including the exterior lock unit, interior lock unit, HomeBase, and a view of the accompanying smartphone application.
Key Features:
- 3-in-1 Triple Security: Combines fingerprint recognition, a 2K HD camera, and advanced video doorbell notifications.
- Multiple Unlock Methods: Fingerprint, eufy Security App, Alexa or Google Voice Assistant, keypad, and traditional keys.
- 2-Way Audio: Communicate with visitors via the integrated doorbell and camera.
- Local Storage: No monthly fees for video storage (requires SD card, not included).
- Rechargeable Battery: High-capacity 10000 mAh battery for extended use.
2. Setup and Installation
2.1 Compatibility Check
Before beginning installation, ensure your door meets the compatibility requirements for the S330 Smart Lock. This includes door thickness, backset, latch hole depth, and bore hole diameter. The lock is designed for single cylinder deadbolts.

Figure 2: Door and Lock Compatibility Diagram. Verify these measurements and door types before installation.
2.2 Initial Setup
- Charge the Battery: Fully charge the smart lock's 10000 mAh rechargeable battery before installation.
- Install the Lock: Follow the detailed instructions provided in the physical installation guide included with your product to mount the exterior and interior units onto your door.
- Set up HomeBase: Connect the eufy Security HomeBase to your router and power it on. The HomeBase acts as a central hub for your smart lock and provides local storage.
- Download eufy Security App: Download the eufy Security app from your smartphone's app store.
- Pair Devices: Open the app, create an account, and follow the on-screen instructions to add your S330 Smart Lock and HomeBase to your system. This typically involves scanning a QR code or following a pairing process.
- Calibrate Lock: Perform the lock calibration through the app to ensure smooth operation.

Figure 3: eufy Security HomeBase, essential for local storage and connectivity.
3. Operating Instructions
3.1 Unlocking and Locking
The S330 Smart Lock offers multiple methods for unlocking and locking your door:

Figure 4: Five convenient ways to unlock your eufy S330 Smart Lock.
- Fingerprint: Place your registered finger on the fingerprint sensor. The lock will unlock in approximately 0.3 seconds.
- Keypad: Enter your programmed passcode on the illuminated keypad.
- eufy Security App: Use the app on your smartphone to remotely unlock or lock the door.
- Voice Assistant: Integrate with Amazon Alexa or Google Voice Assistant for voice-controlled unlocking (requires specific voice commands and setup).
- Physical Key: Use the provided physical keys as a traditional backup method.
3.2 Video Doorbell and Camera Functions
The integrated 2K HD camera and doorbell provide comprehensive monitoring and communication capabilities.

Figure 5: The S330 Smart Lock's integrated security features.
- Live View: Access a live feed from the camera via the eufy Security app at any time.
- Motion Detection: Receive alerts on your smartphone when motion is detected at your door.
- 2-Way Audio: Speak to visitors directly through the app, even when you are away from home.
- Video Recording: Recordings are stored locally on the HomeBase's SD card (not included).

Figure 6: Remote communication with visitors using the 2-Way Audio feature.

Figure 7: Local storage capability via the HomeBase, eliminating monthly fees.
4. Maintenance
4.1 Battery Management
The S330 Smart Lock is powered by a 10000 mAh rechargeable battery. Monitor the battery level through the eufy Security app. When the battery is low, remove it from the interior unit and charge it using the provided USB cable.

Figure 8: The S330 Smart Lock is powered by a high-capacity 10000 mAh rechargeable battery.
4.2 Cleaning and Care
- Exterior Unit: Regularly wipe the exterior unit, including the camera lens, fingerprint sensor, and keypad, with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or electronic components.
- Fingerprint Sensor: Keep the fingerprint sensor clean and free of dirt or smudges to ensure accurate and fast recognition.
- Keypad: While the keypad is designed for durability, prolonged exposure to extreme weather conditions (e.g., intense heat or direct sunlight) may affect its material over time. Consider installing the lock in a location with some protection from direct elements if possible.
- Interior Unit: Clean the interior unit with a dry, soft cloth.
5. Troubleshooting
If you encounter issues with your eufy Security S330 Video Smart Lock, refer to the following common troubleshooting steps:
- Lock Not Responding:
- Check the battery level in the eufy Security app. Recharge the battery if it is low.
- Ensure the lock is properly installed and all connections are secure.
- Fingerprint Recognition Issues:
- Ensure your finger and the sensor are clean and dry.
- Try re-registering your fingerprint in the eufy Security app.
- Ensure your finger covers the entire sensor area.
- Keypad Not Working:
- Verify that the correct passcode is being entered.
- Check for any physical damage to the keypad.
- Connectivity Problems (App/Wi-Fi):
- Ensure your HomeBase is powered on and connected to your Wi-Fi network.
- Check your home Wi-Fi signal strength.
- Restart your HomeBase and the smart lock.
- Ensure the eufy Security app is updated to the latest version.
- Video/Audio Issues:
- Check your internet connection speed.
- Ensure the camera lens is clean.
- Verify microphone and speaker settings in the app.
For more detailed troubleshooting or persistent issues, please refer to the eufy Security app's help section or the official eufy Security support website.
6. Specifications
| Feature | Specification |
|---|---|
| Brand | eufy Security |
| Model Name | S330 |
| Lock Type | Biometric |
| Special Features | Fingerprint, Rechargeable, Smart Lock |
| Recommended Uses | Security, Video Doorbell |
| Controller Type | Amazon Alexa |
| Control Method | App, Voice |
| Connectivity Protocol | Wi-Fi |
| Power Source | Rechargeable Battery (10000 mAh) |
| Camera Resolution | 2K HD |
7. Warranty and Support
7.1 Warranty Information
For detailed warranty information regarding your eufy Security S330 Video Smart Lock, please refer to the warranty card included in your product packaging or visit the official eufy Security website. Warranty terms and conditions may vary by region and purchase date.
7.2 Customer Support
If you require further assistance, technical support, or have questions not covered in this manual, please contact eufy Security customer support. You can typically find contact information, FAQs, and additional resources on the official eufy Security website: