eufyCam S4 Review: One Camera That Does the Job of Two

Introduction

The eufyCam S4 is a hybrid outdoor security camera that combines two camera types in one housing: a fixed bullet camera on top and a motorized pan-tilt-zoom (PTZ) camera underneath. It replaces the two-camera setups many people use to cover both a wide static view and a movable detailed view, and it does so with built-in AI tracking, a removable battery, and an included solar panel.

The headline feature is autonomous tracking. The PTZ module detects a person and follows them automatically, no manual panning required, and it does this with local processing rather than a cloud service. During testing, the camera continued tracking even when someone walked directly underneath it, anticipating where they were heading rather than losing the target.

Who This Camera Is For

This camera suits homeowners who want broad coverage of a yard, driveway, or shop entrance without juggling multiple devices or subscriptions. If you currently run one fixed camera and one PTZ camera to cover the same area, the S4 consolidates that into a single mount, a single charge system, and a single app view.

It also works well as a standalone unit. The camera has built-in storage and performs its AI processing on board, so you get useful functionality without buying additional hardware. Pairing it with eufy’s Home Base adds more storage and extra features, but it is optional rather than required.

Main Strengths

The dual-camera design is the core appeal. The upper bullet cam keeps a constant fixed view, while the lower PTZ module pans, tilts, and offers up to 3x zoom through the app. In practice this means you never trade your static wide shot for the ability to investigate something in detail; both happen simultaneously.

AI auto-tracking is handled locally and works without any web service or subscription. The camera tracks a person as they move across the property and even followed a target walking underneath it toward a door. PTZ auto-targeting and tracking is rated for distances up to 164 feet.

The S4 also includes built-in deterrence: a siren plus red and blue warning lights that can be triggered manually or automatically from the app. The app itself is capable, offering live pan and tilt control, presets, a panorama capture mode, 3x zoom, two-way audio, clip recording, and manual alarm activation.

A lesser-known bonus: eufy offers a web app that lets you view your cameras from a computer. You enter a security key from the mobile app, and while it does not include full control features, it is handy for checking feeds from your desk.

Things to Consider Before Buying

Power is the standout story here. The camera runs on an internal removable battery that charges over USB, and the included solar panel keeps it topped up. The panel is claimed to deliver 24 hours of power from one hour of direct sunlight, and the new panel is rated to work in the shade, with some users reporting it even charges from indoor ambient light.

Durability matters for an outdoor camera, and long-term use in a demanding climate is a good sign. Cameras in this ecosystem have run for years through summer heat around 107 degrees Fahrenheit, weeks of sub-zero winter temperatures with wind chills near negative 50, heavy rain, snow, and ice, all powered by solar alone.

Installation is genuinely simple: an adapter plate mounts with two screws, the camera snaps onto it, and two side locking screws hold it in place. The solar panel can either mount on top of the camera for an all-in-one unit or separately on the wall. Mounting it separately against the wall is worth considering in high-wind areas to reduce leverage on the mount.

One cosmetic quibble: the red and blue deterrence lights can come across as a bit much, and some may prefer the white light option, which is selectable.

Buying Advice

Think about your mounting location before buying. A spot with multiple approach angles is ideal for the S4, since the PTZ tracking shines when subjects can move in any direction. Narrow, single-path areas such as an alley between buildings are often better served by a plain bullet camera, which is simpler and has no moving parts.

The core unit is priced at $350. If you connect it to the Home Base you already own, or decide to add one later, you gain face recognition so family members do not trigger notifications, plus smarter person, vehicle, and animal detection. None of this is mandatory, and no subscription is needed for the core functionality.

It is also worth watching for promotions: bundles have been offered at 24% off, with discounts of up to $1,000, during eufy’s sale events.

Conclusion

The eufyCam S4 is a thoughtful piece of hardware for anyone tired of running two cameras to cover one location. The combination of a fixed bullet cam and an auto-tracking PTZ module, backed by solar power and local AI without a subscription, makes it one of the more complete standalone security cameras available. Match it to a location with room to track, and it earns its place.