eufy PoE NVR Security Camera System S4 - 4K+360 PTZ Coverage

In this review the eufy PoE NVR Security Camera System S4 is examined for homeowners and small businesses who need continuous, high-resolution coverage without cloud dependency. The system stands out for delivering a mix of fixed 4K bullet cameras, 4K bullet-PTZs for cross-cam tracking, and a 2K 360 pan PTZ that actively follows subjects. The single biggest reason to consider it is its local AI agent and cross-cam tracking, which provide accurate, real-time coverage and useful local smart features while keeping recordings on a preinstalled 2 TB HDD.

Key Features

• 4K and 2K mixed cameras: Two 4K bullet cameras and two 4K bullet-PTZs plus a 2K 360 PTZ combine fixed-zone detail with wide-area tracking for comprehensive coverage.
• Live cross-cam tracking: Bullet-PTZ cameras hand off tracking in real time so moving subjects remain followed without gaps when one camera reaches its limit.
• Local AI agent: Built-in AI runs on a 6T/8-core local processor to identify genuine threats, reduce false alerts, and enable custom no-go zones and tailored responses.
• 24/7 local recording: A preinstalled 2 TB HDD supports continuous recording and is user-upgradeable for extended archival storage up to 16 TB.
• Plug-and-play PoE setup: Single-cable PoE for power and video simplifies installation and integrates with eufy app and smart assistants when app versions meet the stated requirements.
• Color night vision and weatherproofing: AI-ISP color night vision with spotlights as needed and IP65 protection make it useful in low light and harsh weather.

Who It's For

This system is well suited for homeowners, small business owners, and property managers who want high-resolution local recording and advanced tracking without mandatory cloud subscriptions. The combination of fixed 4K cameras and PTZ tracking makes it especially good for properties with mixed needs: clear ID-ready detail at entry points and wide-area coverage for yards or parking lots.

It may be less ideal for buyers who require only a single, low-cost camera or those who prefer purely wireless systems. Also ensure your eufy app meets the required iOS or Android version before purchase for the best experience.

Pros & Cons

Pros

• Excellent picture quality from 4K fixed cameras and PTZ close-ups for identifying subjects.
• Effective AI-driven local detection reduces false alerts and enables smart video search by keyword.
• Seamless cross-cam tracking keeps moving targets in view across multiple cameras.
• Plug-and-play PoE and preinstalled 2 TB HDD simplify installation and continuous recording.

Cons

• Requires updated eufy app versions on mobile devices to access some features, which may add a step before full setup.
• PTZ and advanced features are best exploited on larger properties; buyers with very small spaces may find the system more than they need.

Specifications

Included cameras	2 Bullet 4K, 2 Bullet-PTZ 4K, 1 PTZ 2K 360
Recording	24/7 local recording on preinstalled 2 TB HDD (upgradeable)
Expandable channels	8 channels standard, expandable up to 16 channels
Local AI	6T/8-core local AI agent for analysis and alerts
Night vision	AI-ISP color night vision with spotlights as needed
Weather rating	IP65 weatherproof

Our Verdict

The eufy PoE NVR Security Camera System S4 is a strong pick for buyers who want high-resolution local recording with intelligent tracking and meaningful AI features. It offers good value for properties that benefit from both fixed-detail 4K coverage and active PTZ follow-up, and the local 2 TB HDD plus expandable channels make it a flexible long-term solution.

Frequently Asked Questions

Do I need a subscription for recording?
Recording is stored locally on the preinstalled 2 TB HDD, so a subscription is not required for local 24/7 recording.

What app versions are required?
Update the eufy app to at least iOS V5.0.70 or Android V5.0.71 to ensure full compatibility with the PoE NVR features.

Can I expand the system later?
Yes, the system supports expanding from 8 channels to 16 and the HDD can be upgraded up to 16 TB for longer retention.