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eufy eufyCam S4 Triple-Lens 4K Solar Security Camera
Revolutionary dual-camera system combines fixed 4K surveillance with intelligent 360° PTZ tracking, powered entirely by solar energy.
Max Resolution
4K
Upper camera
Coverage
360°
PTZ tracking
Solar Power
5.5W
1hr daily charge
Detection Range
50m
Auto-tracking
Home security has evolved beyond static cameras that simply record what's directly in front of them. The eufyCam S4 represents a breakthrough approach: a sophisticated dual-camera system that combines comprehensive area monitoring with intelligent subject tracking, all powered entirely by the sun.
This isn't just another solar security camera. The S4's innovative design features two distinct camera systems working in perfect harmony – a fixed 4K wide-angle camera that never misses the big picture, and a responsive 2K Pan-Tilt-Zoom camera that automatically follows movement with remarkable precision.
The first solar security camera that thinks and moves like a professional security operator
— eufy Security Innovation Team
IDEAL FOR
Large Property Owners
Perfect for monitoring expansive driveways, gardens, and perimeters where comprehensive coverage is essential
Security-Conscious Families
Ideal for parents wanting intelligent monitoring that automatically tracks movement around their home
Off-Grid Locations
Brilliant for remote sites, holiday homes, or areas without mains power where solar reliability is crucial
KEY FEATURES
Dual-Camera Intelligence
Fixed 4K camera provides 130° overview while independent 2K PTZ camera tracks subjects with 360° rotation
Smart Auto-Tracking
Automatically follows detected persons up to 50 metres, zooming out when multiple subjects enter frame
SolarPlus™ 2.0 Technology
Ultra-efficient 5.5W solar panel requires just one hour of direct sunlight daily for continuous operation
Built-in AI Processing
On-device intelligence distinguishes between people, vehicles, and pets without requiring cloud processing
Expandable Storage
32GB built-in storage expandable to 256GB via microSD, or 16TB with optional HomeBase S380
Active Deterrence
105dB siren and red/blue warning lights activate automatically when threats are detected
INTELLIGENT TRACKING SYSTEM
Dual-Camera Coordination
The S4's breakthrough lies in how its two camera systems work together. The upper 4K camera maintains constant surveillance of your entire property with its 130° field of view, ensuring nothing escapes detection. When movement is spotted, the lower 2K PTZ camera springs into action, rotating a full 360° to lock onto the subject with remarkable precision.
This coordination creates an unprecedented level of security coverage. You get both the wide situational awareness of a fixed camera and the detailed tracking capabilities of a PTZ system, eliminating the blind spots that plague traditional single-camera setups.
SOLAR POWER INNOVATION
SolarPlus™ 2.0 Efficiency
The S4's solar system represents a significant leap forward in renewable security technology. The 5.5W ultra-large panel is designed to capture maximum energy even in challenging weather conditions, requiring just one hour of direct sunlight to power the camera for an entire day.
The detachable solar panel design offers exceptional installation flexibility, allowing you to position the camera in the optimal location for surveillance while placing the panel where it receives maximum sun exposure. This separation eliminates the compromise between security coverage and power generation that hampers other solar cameras.
HOW IT COMPARES
eufyCam S4 vs. Typical Solar Security Cameras
| Feature | This Product | Typical |
|---|---|---|
| Camera System | Dual Camera | Single fixed |
| Tracking Range | 50 metres | No tracking |
| Solar Panel Power | 5.5W | 2-3W |
| Daily Solar Requirement | 1 hour | 3-4 hours |
| On-Device AI | Yes | Cloud dependent |
THE VERDICT
Strengths
- Revolutionary dual-camera system provides both overview and detailed tracking
- Exceptional 50-metre auto-tracking range with intelligent zoom adjustments
- Highly efficient solar system works in all weather conditions
- Complete standalone operation with built-in AI and storage
- Professional-grade deterrence with 105dB siren and warning lights
- Flexible installation with detachable solar panel design
Consider
- Premium pricing reflects advanced dual-camera technology
- Complex setup may require professional installation for optimal positioning
WHAT'S IN THE BOX
eufyCam S4 Camera
5.5W Solar Panel
Mounting Bracket
Solar Panel Mount
Connection Cable
Security Screws
User Manual
Brand
eufy
Model
eufyCam S4
Model Number
T81723W1
Camera Type
Triple-Lens PTZ-Bullet
Max Resolution
4K (Upper Camera)
PTZ Resolution
2K (Lower Camera)
Field of View
130° (Fixed), 360° (PTZ)
Tracking Range
Up to 50 metres
Solar Panel Power
5.5W
Daily Solar Requirement
1 hour direct sunlight
Built-in Storage
32GB
Storage Expansion
Up to 256GB (microSD)
AI Detection
Person, Vehicle, Pet
Motion Sensors
Radar + PIR
Siren Volume
105dB
Warning Lights
Red & Blue LED
Weather Resistance
Yes
Connectivity
Wi-Fi
Compatibility
Standalone or with HomeBase S380
Compare Similar Models
Eufy eufyCam S4 Triple-Lens 4K Solar Security Camera | T81723W1
€249.00
Brand eufy
Model eufyCam S4
€199.00
Model SoloCam S340
Variant / SKU T81703W1
€149.99
Product Eufy Video Doorbell E340
Model / SKU / Variant T8214311
| Price | €249.00 | €199.00 | €179.00 | €149.99 |
| Brand | eufy | — | — | — |
| Model | eufyCam S4 | SoloCam S340 | — | — |
| Model Number | T81723W1 | — | — | — |
| Camera Type | Triple-Lens PTZ-Bullet | — | — | — |
| Max Resolution | 4K (Upper Camera) | — | — | — |
| PTZ Resolution | 2K (Lower Camera) | — | — | — |
| Field of View | 130° (Fixed), 360° (PTZ) | 135° | — | — |
| Tracking Range | Up to 50 metres | — | — | — |
| Solar Panel Power | 5.5W | — | — | — |
| Daily Solar Requirement | 1 hour direct sunlight | — | — | — |
| Built-in Storage | 32GB | — | — | — |
| Storage Expansion | Up to 256GB (microSD) | — | — | — |
