Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your eufy Security eufyCam S4 outdoor WiFi surveillance camera. Please read this manual thoroughly before using the product to ensure proper functionality and safety.
Product Overview
The eufyCam S4 is a revolutionary Bullet-PTZ camera featuring a triple-lens design for comprehensive outdoor surveillance. It offers 4K UHD resolution, 360° panorama, auto-tracking, 8x hybrid zoom, and advanced night vision capabilities.
Key Features
- Revolutionary Triple-Lens Bullet-PTZ Camera: Combines a fixed 4K Bullet lens (130° view) with a dual 2K PTZ lens for intelligent 360° tracking and zoom.
- Bullet-to-PTZ Tracking and Auto-Framing: The PTZ camera automatically tracks and zooms up to 50m when the Bullet camera detects a subject, ensuring detailed monitoring. It auto-zooms out for full visibility if multiple subjects appear.
- Powerful Solar Charging with SolarPlus 2.0: A 5.5W solar panel and SolarPlus 2.0 technology provide continuous power with just 1 hour of daily sunlight exposure. The detachable panel allows for versatile installation.
- Standalone Operation: The eufyCam S4 can function independently without a HomeBase, featuring integrated AI for intelligent detection of people, vehicles, and pets. Includes 32GB built-in storage, expandable up to 256GB via microSD (not included).
- Enhanced with HomeBase S380: For advanced features like BionicMind AI (differentiating family from strangers) and 16GB integrated storage, connect to a HomeBase S380. Ensure HomeBase S380 firmware is V3.7.2.6 or later and use the latest eufy app version for continuous recording and snapshots.
Package Contents
Please ensure all items are present in your package:
- eufyCam S4 Camera (Model T8172)
- Solar Panel
- Solar Panel Mounting Bracket
- Camera Mounting Bracket
- USB-C Cable (3m)
- USB-C Cable
- Screw Kit (x2)
- Positioning Sticker
- User Manual
Setup and Installation
Tools Required
- Phillips Head Screwdriver (#1 or #2)
- Power Drill
Choosing an Installation Location
For optimal performance, install the camera 2-3 meters (7-10 feet) above the ground. Position the camera at an angle rather than directly facing the surveillance area to improve detection and avoid blind spots.
Installation Options
You have two primary installation options:
Option 1: Separate Installation (Camera and Solar Panel Installed Separately)
This option is ideal for areas where direct sunlight is not consistently available at the camera's mounting point.
- Use the provided positioning sticker to mark the drill holes for the camera mounting bracket. Drill holes using a 5.95 mm drill bit, then insert the wall anchors.
- Align the screw holes of the camera mounting bracket with the wall anchors and secure it firmly.
- Fix the camera securely onto the mounting bracket. Ensure it is properly seated and stable.
- For the solar panel, install its mounting bracket in a suitable location that receives maximum direct sunlight. Ideally, angle the panel between 20-30 degrees for optimal light absorption.
- Connect the solar panel to the camera using the provided USB-C extension cable.

Image: Separate installation of eufyCam S4 camera and solar panel.
Option 2: Grouped Installation (Camera and Solar Panel Installed Together)
This option is suitable for locations with direct sunlight where the camera and panel can be mounted as a single unit.
- Attach the solar panel mounting support directly to the top of the camera using two screws.
- Securely screw the solar panel onto the support until it is firmly fixed.
- Connect the USB-C cable from the solar panel to the camera.
- Use the positioning sticker to mark the drill holes for the camera mounting bracket. Drill holes using a 5.95 mm drill bit, then insert the wall anchors.
- Align the screw holes of the camera mounting bracket with the wall anchors and secure it firmly.
- Fix the combined camera and solar panel unit securely onto the mounting bracket.

Image: Grouped installation of eufyCam S4 camera and solar panel.
Important Installation Notes
- Ensure the camera is securely fixed to prevent accidental falls.
- Avoid installing the camera in locations with excessive vibrations or direct exposure to extreme weather conditions beyond its IP65 rating.
- For HomeBase S380 users, update the HomeBase firmware to V3.7.2.6 or later and use the latest eufy app version for full functionality.
Operating Instructions
Initial Setup with eufy Security App
- Download the "eufy Security" app from your smartphone's app store (iOS or Android).
- Create an account or log in.
- Follow the in-app instructions to add your eufyCam S4. This typically involves scanning a QR code on the camera.
- Configure Wi-Fi settings and connect the camera to your network. The camera supports 2.4GHz Wi-Fi.
Camera Features and Usage
Triple-Lens System
The camera features a fixed 4K Bullet lens for a wide 130° overview and a 2K PTZ lens for detailed tracking.

Image: eufyCam S4 Triple-Lens System.
Auto-Tracking and Zoom
When motion is detected by the Bullet camera, the PTZ camera automatically tracks the subject and zooms in for clear details up to 50 meters. If multiple subjects are detected, it will zoom out to maintain a comprehensive view.

Image: Auto-Tracking and Zoom in action.
Night Vision
The eufyCam S4 offers advanced night vision, including color night vision (Starlight) for clear, detailed images even in low-light conditions.

Image: Night Vision comparison.
AI Detection
Integrated AI intelligently detects and differentiates between people, vehicles, and pets, reducing false alarms. When paired with HomeBase S380, BionicMind AI can recognize family members.

Image: AI Detection capabilities.
Storage
The camera has 32GB of built-in storage. This can be expanded up to 256GB using a microSD card (not included).

Image: MicroSD card slot for storage expansion.
Connectivity
The eufyCam S4 connects via Wi-Fi. For optimal performance and extended features, it is recommended to connect it to a HomeBase S380.

Image: Connectivity options for eufyCam S4.
Two-Way Audio
The camera supports two-way audio with AI noise reduction for clear communication.

Image: Two-Way Audio with AI Noise Reduction.
Smart Home Integration
Compatible with Alexa and Google Assistant for hands-free control and seamless integration into your smart home ecosystem.

Image: Smart Home Integration.
Maintenance
Cleaning the Camera and Solar Panel
- Regularly wipe the camera lens and solar panel with a soft, damp cloth to remove dust and debris. This ensures optimal image clarity and charging efficiency.
- Avoid using harsh chemicals or abrasive materials that could damage the lenses or surfaces.
Battery Management
- The camera features a quick-change battery system. If the battery needs replacement, follow the instructions in the app.
- Ensure the solar panel is positioned to receive adequate sunlight to maintain continuous charge.
Firmware Updates
- Keep your camera and HomeBase S380 (if applicable) firmware updated through the eufy Security app to ensure the latest features and security enhancements.
Troubleshooting
Common Issues and Solutions
Camera Not Connecting to Wi-Fi
- Ensure your Wi-Fi network is 2.4GHz.
- Check the Wi-Fi signal strength at the camera's location using the eufy Security app.
- Restart your Wi-Fi router and the camera.
- If using HomeBase S380, ensure it is connected to the internet and its firmware is up to date.
Poor Image Quality
- Clean the camera lens.
- Ensure there are no obstructions in the camera's field of view.
- Check your internet connection speed.
Solar Panel Not Charging
- Ensure the solar panel is clean and free of debris.
- Verify the solar panel is positioned to receive direct sunlight for at least 1 hour daily.
- Check the connection cable between the solar panel and the camera.
False Alarms
- Adjust motion detection sensitivity in the eufy Security app.
- Configure activity zones to monitor specific areas and exclude irrelevant ones.
- Utilize AI detection settings to filter for people, vehicles, or pets.
Specifications
| Feature | Specification |
|---|---|
| Model Name | T8172 |
| Video Recording Resolution | 4K (Bullet), 2K (PTZ) |
| Connectivity Technology | Wireless (Wi-Fi 2.4GHz) |
| Special Feature | Night Vision (Color), Auto-Tracking, AI Detection |
| Indoor/Outdoor Use | Outdoor |
| Mounting Type | Wall Mount |
| Power Source | Solar Powered (5.5W Solar Panel) |
| Dimensions (L x W x H) | 30 x 20 x 15 cm |
| Weight | 2.05 kilograms |
| Storage | 32GB Built-in, expandable up to 256GB (microSD) |
| Color | Black+White |
Warranty and Support
For warranty information, technical support, or further assistance, please visit the official eufy Security website or contact their customer service.
Product support and updates are available through the eufy Security app.





