eufyCam S4 4K Triple-Lens Solar Outdoor Security Camera with 360° PTZ | T81723W1

4K Solar Security Camera with Dual-Lens PTZ, AI Tracking & 360° Coverage

The eufyCam S4 is an advanced outdoor security camera combining a fixed 4K wide-angle camera with a 2K dual-lens Pan-Tilt-Zoom camera in a single triple-lens security system. This 2-in-1 design provides both a wide overview of your property and detailed close-up tracking from one installation.

The upper 4K camera provides a 130° fixed field of view, while the lower PTZ camera rotates to deliver 360° coverage. When a person is detected, the PTZ camera can automatically lock onto and track the subject, providing close-up detail at distances of up to 50 metres.

Powered by a detachable 5.5W SolarPlus™ 2.0 solar panel, the S4 is designed for year-round wireless security. According to eufy, approximately one hour of direct sunlight per day can provide sufficient power for normal operation under its specified conditions.

Features

• Triple-Lens Outdoor Security Camera
• 2-in-1 Fixed Bullet & PTZ Camera Design
• 4K Wide-Angle Main Camera
• Dual 2K PTZ Camera System
• 130° Fixed Wide-Angle View
• 360° Pan-Tilt-Zoom Coverage
• Bullet-to-PTZ Automatic Tracking
• Intelligent Auto-Framing
• Tracks People at Distances up to 50m
• Simultaneous Wide & Close-Up Views
• AI Person Detection
• AI Vehicle Detection
• AI Pet Detection
• Radar & PIR Motion Detection
• Full-Colour Night Vision with Spotlights
• 4 Integrated LED Spotlights
• Red & Blue Warning Lights
• Powerful 105dB Security Siren
• 5.5W Detachable Solar Panel
• SolarPlus™ 2.0 Technology
• Quick-Swap Replaceable Battery
• 32GB Built-In Local Storage
• Expandable up to 256GB via microSD
• Can Operate Without a HomeBase
• Compatible with HomeBase S380 / HomeBase 3
• BionicMind™ AI with Compatible HomeBase
• Two-Way Audio with AI Noise Reduction
• Alexa & Google Assistant Compatible
• Local Encrypted Video Storage
• Dynamic Privacy Zones
• 24/7 Recording Available When Connected to Suitable Direct Power*

Triple-Lens 2-in-1 Camera System

Instead of requiring separate fixed and PTZ cameras, the eufyCam S4 combines both functions into one security camera.

The upper 4K wide-angle camera continuously covers a broad 130° area, while the lower dual-lens 2K PTZ system can rotate to follow activity and capture more detailed views.

Both views can be monitored simultaneously, providing a wide overview alongside a close-up view of the tracked subject.

Intelligent Bullet-to-PTZ Tracking

When the fixed bullet camera detects a person, the PTZ camera can automatically rotate towards the subject, zoom in and continue tracking.

Intelligent auto-framing adjusts the view according to what's happening. It can zoom in on a person from up to 50 metres away, while automatically zooming back out when multiple subjects enter the scene.

This makes the S4 particularly suitable for monitoring:

• Driveways
• Front Gardens
• Rear Gardens
• Side Access
• Entrances
• Detached Buildings
• Larger Residential Properties

SolarPlus™ 2.0 Power

The eufyCam S4 incorporates a detachable 5.5W solar panel using eufy's SolarPlus™ 2.0 technology.

The panel can be positioned separately from the camera to improve exposure to sunlight. eufy states that one hour of direct sunlight per day can provide enough energy for normal all-day operation under its specified usage conditions.

The camera also features a quick-swap replaceable battery, providing additional flexibility for maintaining power.

Smart AI Detection

The S4 can operate independently with on-device AI detection for:

• People
• Vehicles
• Pets

When paired with the HomeBase S380, additional BionicMind™ AI functionality becomes available, including facial recognition designed to distinguish familiar people from strangers.

Radar & PIR Motion Detection

The camera combines radar and PIR motion detection to improve the accuracy of motion alerts and reduce unwanted notifications.

Detection zones and schedules can be customised, allowing the security system to concentrate on the areas and times most important to the user.

Active Intruder Deterrence

The S4 provides active visual and audible deterrence in addition to video monitoring.

When configured to respond to a detected threat, the camera can activate red and blue warning lights together with a powerful 105dB siren, helping discourage unwanted visitors before they approach further.

Night Vision

Integrated LED spotlights enable full-colour night vision, while AI-enhanced imaging is designed to maintain useful image detail in low-light conditions.

The camera features four LED spotlights, providing additional illumination around the monitored area.

Local Storage – No HomeBase Required

The eufyCam S4 can operate as a standalone camera connected directly to a Wi-Fi router, meaning a HomeBase is not required for basic operation.

It includes 32GB of built-in local storage, which can be expanded to 256GB using a compatible microSD card (sold separately).

HomeBase S380 Compatibility

Connecting the S4 to a HomeBase S380 (HomeBase 3) unlocks additional features, including BionicMind™ facial recognition and substantially increased storage capacity.

HomeBase S380 includes 16GB of built-in storage and supports expansion up to 16TB. eufy notes that the appropriate camera, HomeBase and app firmware versions are required for certain functions.

Please note: HomeBase 2 / S280, HomeBase Mini and eufy NVR are not currently supported by the S4 according to eufy's product information.

24/7 Continuous Recording

The eufyCam S4 supports 24/7 continuous recording when connected to direct power using a suitable 5V/2A or higher power adapter.

Suitable local storage is also required. When using a HomeBase S380, compatible firmware versions are required to enable this functionality.

Two-Way Audio

Built-in two-way audio allows users to communicate with visitors through the camera.

AI-powered noise reduction helps filter distracting background sounds, providing clearer voice communication when using the camera remotely.

• Brand: eufy
• Model: eufyCam S4
• Product Code: T81723W1
• Product Type: Solar Outdoor Security Camera
• Camera Design: 2-in-1 Bullet + PTZ
• Number of Lenses: 3
• Main Camera Resolution: 4K
• PTZ Camera Resolution: Dual 2K
• Main Camera Field of View: 130°
• PTZ Coverage: 360°
• Lens Aperture: f/1.6
• Maximum Tracking Distance: Up to 50m
• Auto Tracking: Yes
• Auto-Framing: Yes
• Person Detection: Yes
• Vehicle Detection: Yes
• Pet Detection: Yes
• Facial Recognition: With HomeBase S380
• Motion Detection: Radar + PIR
• Colour Night Vision: Yes
• Spotlights: 4 x LED
• Warning Lights: Red & Blue
• Siren: 105dB
• Solar Panel: 5.5W SolarPlus™ 2.0
• Solar Panel Type: Detachable
• Battery: Replaceable / Quick-Swap
• Built-In Storage: 32GB
• microSD Expansion: Up to 256GB
• Standalone Operation: Yes
• HomeBase Compatibility: HomeBase S380
• Two-Way Audio: Yes
• Alexa Compatibility: Yes
• Google Assistant Compatibility: Yes
• 24/7 Recording: Yes, with Direct Power & Compatible Storage
• Privacy Zones: Yes
• Local Encrypted Storage: Yes

Why Choose the eufyCam S4?

The eufyCam S4 is particularly suited to properties where both wide-area surveillance and detailed automatic tracking are required without installing multiple cameras.

Its combination of 4K fixed monitoring, dual-lens 2K PTZ tracking, 360° coverage, radar and PIR detection, solar charging and local storage creates a highly capable standalone outdoor security solution. Adding HomeBase S380 further expands its AI recognition and storage capabilities.