NVR security recorder Eufy S4 Max — 8-channel, 4K (3840×2160), HDD 2 TB (up to 16 TB), Black/Grey/White

16 MP Triple-Lens Bullet-PTZ Camera combines a 4K fixed wide-angle upper camera with a 2K PTZ lower camera to provide broad scene coverage and close-up tracking. The upper lens offers a 122° fixed view while the lower PTZ module delivers 8× auto-zoom and 360° pan for flexible monitoring and continuous observation of moving subjects.

Advantages

The system performs auto-framing and group tracking: when the bullet camera detects a subject, the PTZ locks on and follows up to 164 ft with centred, sharp close-ups. Live cross-cam tracking coordinates all cameras so tracking continues seamlessly when one camera reaches its limit. A local AI agent (6T/8‑Core) provides real-time analysis, threat identification, customizable no-go zones and alerts. The device supports free smart video search by keyword and two-way talk with AI noise reduction. Weatherproof IP65 design and plug-and-play PoE setup simplify installation; the recorder comes with a pre-installed 2 TB HDD (expandable to 16 TB) and the system supports 8 video channels expandable to 16.

Key specifications

• Video input channels: 8 channels (expandable to 16)
• Upper camera resolution: 3840 x 2160 pixels (4K)
• Lower PTZ camera resolution: 2K with 8× auto-zoom and 360° pan
• HDD capacity: 2 TB pre-installed, maximum storage capacity: 16 TB
• Power over Ethernet (PoE) for power and video over one cable
• Built-in processor: local AI agent (6T/8‑Core)
• Ingress protection: IP65 weatherproof
• Colors: Black, Grey, White

How to use

Mount the camera in a location that provides the desired wide-angle view for the upper lens and unobstructed range for the PTZ lower module. Connect the recorder and cameras using PoE cables to supply power and video through a single connection. Configure the local AI agent through the device interface to set detection rules, no-go zones and alert preferences. Use the smart video search to find events by keyword and control live cross-cam tracking from the system interface or companion app.

Recommendations

For reliable long-term recording place the unit where it is protected from direct physical interference, and consider upgrading the HDD to a larger capacity if you require extended 24/7 retention. Verify PoE switch or injector compatibility and ensure firmware is kept up to date for optimal AI performance.