1. Introduction
This manual provides essential information for the installation, operation, and maintenance of your eufy Security S300 eufyCam 3C Wireless 4K Security Camera System. This system features 4K video resolution, BionicMind AI for facial recognition, expandable local storage, and a long-lasting battery for comprehensive home security.
2. What's in the Box
The eufy Security S300 eufyCam 3C kit typically includes the following components:
- eufyCam 3C Cameras (quantity may vary by kit)
- HomeBase 3
- Mounting brackets and screws
- USB-C charging cable
- Power adapter for HomeBase
- Ethernet cable
- Quick Start Guide

Image: Contents of the eufy Security S300 eufyCam 3C 2-Cam Kit, including cameras and HomeBase 3.
3. Setup
3.1 Initial Charging and App Pairing
- Charge Cameras: Fully charge the eufyCam 3C cameras using the provided USB-C cable and a compatible power adapter before installation.
- Power On HomeBase 3: Connect the HomeBase 3 to power and your router using the provided Ethernet cable. Wait for the LED indicator to turn solid blue.
- Download eufy Security App: Download the eufy Security app from your device's app store and create an account.
- Add HomeBase 3: In the app, tap 'Add Device' and select 'HomeBase 3'. Follow the on-screen instructions to pair the HomeBase.
- Add eufyCam 3C: Once HomeBase 3 is set up, tap 'Add Device' again and select 'S300 eufyCam'. Press the SYNC button on the camera for 2 seconds until you hear a beep to pair it with the HomeBase.
Video: An official overview of the eufyCam S300 (eufyCam 3C) 4-Cam Kit, demonstrating the components and initial setup process.
3.2 Mounting the Camera
Select a mounting location that provides the desired viewing angle and strong Wi-Fi signal. The camera should ideally be placed 7-10 feet (2-3 meters) off the ground.
- Test Signal: Use the eufy Security app's signal strength test feature at your desired mounting location to ensure optimal connectivity.
- Install Mounting Bracket: Secure the mounting bracket to a wall or fascia board using the provided screws.
- Attach Camera: Screw the eufyCam 3C onto the mounting bracket.
- Adjust Angle: Adjust the camera's angle to cover the desired area.

Image: A person installing the eufyCam 3C camera on an exterior wall, demonstrating the mounting process.
3.3 Solar Panel Connection (Optional)
To ensure continuous power and avoid manual recharging, you can connect a compatible eufy solar panel to your eufyCam 3C.
- Mount Solar Panel: Install the solar panel in a location that receives ample direct sunlight throughout the day.
- Connect Cable: Connect the solar panel's USB-C cable to the charging port on the eufyCam 3C. Ensure the connection is secure and weatherproof.

Image: A close-up view of the eufyCam 3C camera connected to a solar panel, illustrating the charging setup.
4. Operating Instructions
4.1 Using the eufy Security App
The eufy Security app is your primary interface for managing and interacting with your eufyCam 3C system.
- Live View: Tap on the camera feed to view live video.
- Event Playback: Access recorded events from the timeline or event list.
- Two-Way Audio: Use the microphone icon in live view to speak through the camera.
- Activity Zones: Customize detection areas to reduce false alarms.
- Motion Detection Settings: Adjust sensitivity and detection modes (e.g., Optimal Battery Life, Optimal Surveillance, Customize Recording).

Image: A person viewing the eufy Security app on a smartphone, showing the camera's live feed and settings.
4.2 Voice Control Integration
The eufyCam 3C supports voice control through Amazon Alexa and Google Assistant.
- Connect Accounts: Link your eufy Security account with your Alexa or Google Home app.
- Voice Commands: Use commands like "Alexa, show me the front door" or "Hey Google, show me the backyard camera" to view live feeds on compatible smart displays.

Image: A man interacting with a smart display, using voice commands for Alexa to show the front door camera feed.
5. Features
5.1 4K Resolution and Color Night Vision
The eufyCam 3C captures video in 4K Ultra HD, providing clear and detailed footage. Its Starlight photosensitive system enhances low-light conditions, enabling color night vision for improved clarity after dark.

Image: A close-up of the eufyCam 3C lens, highlighting its 4K detail capabilities with 8 million pixels, 8x zoom, and f/1.4 lens aperture.

Image: The eufyCam 3C camera with an activated motion-activated spotlight, providing illumination for clear color night vision.
5.2 BionicMind AI Facial Recognition
The BionicMind AI feature allows the system to differentiate between familiar faces (family members) and strangers, enhancing security and reducing unnecessary alerts.

Image: A family enjoying a backyard gathering, with facial recognition labels identifying individuals as "Stranger," "Mom," and "Dad," demonstrating the BionicMind AI feature.
5.3 Expandable Local Storage
The HomeBase 3 includes 16 GB of built-in storage and can be expanded up to 16 TB with a portable hard drive (not included), providing ample space for video recordings without monthly fees.

Image: A hand inserting an SSD into the HomeBase 3, illustrating the expandable local storage feature.
5.4 Long Battery Life and Weatherproof Design
The eufyCam 3C offers up to 180 days of wireless security on a single charge. Its robust design ensures reliable operation in various outdoor weather conditions.

Image: The eufyCam 3C camera mounted outdoors during a rain shower, demonstrating its weatherproof capabilities.
6. Maintenance
- Clean Lens: Regularly clean the camera lens with a soft, damp cloth to ensure clear image quality.
- Check Battery Status: Monitor battery levels via the eufy Security app. If not using a solar panel, recharge cameras as needed.
- Firmware Updates: Keep your HomeBase 3 and cameras updated with the latest firmware through the app for optimal performance and security features.
- Inspect Mounting: Periodically check the camera's mounting for stability, especially after severe weather.
7. Troubleshooting
- No Live View/Recording: Ensure the camera is charged, connected to HomeBase 3, and HomeBase 3 is online. Check Wi-Fi signal strength.
- Poor Image Quality: Clean the camera lens. Check for obstructions in the field of view. Ensure adequate lighting for night vision.
- False Alarms: Adjust motion detection sensitivity and configure activity zones in the eufy Security app.
- Battery Draining Quickly: Review motion detection settings; frequent recordings in high-traffic areas can consume more power. Ensure solar panel (if installed) is receiving sufficient sunlight.
- Cannot Pair Camera: Ensure the camera is within 1 meter of the HomeBase 3 during pairing. Fully charge the camera before attempting to pair.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | eufy Security |
| Connectivity Technology | Wireless |
| Video Capture Resolution | 2160p (4K) |
| Special Feature | Night Vision (Starlight sensor) |
| Number of Channels | 2 (in 2-Cam Kit) |
| Memory Storage Capacity | 16 GB (expandable up to 16 TB) |
| Power Source | Battery Powered |
| Operating System | Proprietary |
| Hardware Interface | 802.11 ac/b/g/n |
| Lens Type | Ultra Wide Angle |
| Item Weight | 0.79 Pounds |
| Item Dimensions | 2.13 x 2.48 x 3.58 inches |
9. Warranty and Support
Your eufy Security S300 eufyCam 3C comes with a 90-day limited warranty. For technical support, warranty claims, or additional product information, please refer to the official eufy Security website or contact their customer service directly. The seller for this product is EufyHome.





