The eufyCam S4 takes a different approach to outdoor security cameras by combining two jobs in one device.
A fixed 4K bullet camera keeps watching the main area while a separate motorized PTZ camera can rotate, track movement and zoom in on activity elsewhere.
That solves one of the traditional compromises with pan-and-tilt cameras: when the camera turns to follow somebody, the original area can disappear from view.
The S4 is also designed around local storage, solar charging and no required monthly recording fee when used with eufy’s local-storage system.
But there is an important buying question in 2026. The older eufyCam S3 Pro remains a strong 4K solar camera, so the S4 only makes sense if you will actually benefit from its PTZ tracking and wider coverage.
Check current eufyCam S4 2-Cam Kit pricing and availability on Amazon.
EufyCam S4 at a glance
| Feature | EufyCam S4 2-Cam Kit |
|---|---|
| Amazon ASIN | B0FH2W7XWH |
| Camera design | Fixed bullet camera plus motorized PTZ camera |
| Fixed camera resolution | 4K 3840 × 2160 |
| PTZ camera resolution | Dual 2K |
| Fixed-camera field of view | 130° diagonal |
| Zoom | Up to 8× hybrid zoom |
| Tracking | Bullet-to-PTZ tracking and auto-framing |
| Motion detection | PIR plus radar |
| AI detection | People, vehicles and pets; additional HomeBase features available |
| Power | Rechargeable battery with SolarPlus 2.0 solar panel |
| Local storage | HomeBase S380 included; expandable local storage available |
| Monthly recording fee required | No |
| 24/7 continuous recording | Supported when connected to continuous power and configured with suitable storage |
| Smart-home support | Alexa and Google Assistant |
| Apple HomeKit | Not currently supported on the US S4 configuration |
| Weather resistance | IP65 |
What makes the EufyCam S4 different?
The S4’s defining feature is not simply its 4K resolution.
The upper camera behaves like a traditional fixed outdoor security camera. It keeps a wide 4K view on the area where you point it.
Below that sits a motorized PTZ system capable of rotating to follow activity and zooming in for a closer look.
The idea is simple but useful.
If somebody walks through your driveway, the fixed camera can continue monitoring the entrance while the PTZ camera follows the person farther across the property.
With a conventional single-lens PTZ camera, turning to follow somebody may mean looking away from the original area.
The fixed 4K camera and PTZ camera work together
The S4 uses what eufy calls Bullet-to-PTZ tracking.
When the fixed camera detects relevant movement, the PTZ camera can rotate toward the subject, zoom and continue following the activity.
The fixed camera does not need to abandon its original view.
This is especially useful around:
- long driveways;
- front yards;
- large back gardens;
- side passages;
- detached garages;
- parking areas; and
- properties where activity can move between several zones.
The PTZ system also supports auto-framing. If several people enter the scene, it can adjust the framing rather than remaining tightly focused on only one subject.
8x hybrid zoom is more useful when the monitored area is deep
The S4 supports up to 8× hybrid zoom.
Zoom becomes more useful as the distance between the camera and important activity increases.
If somebody is standing directly beneath a camera, they already occupy a large part of the image.
If they are at the opposite end of a long driveway, the ability to track and zoom becomes much more valuable.
This makes the S4 particularly interesting for properties where one fixed camera would otherwise need to cover both a close entrance and activity farther away.
Night vision takes a different approach from the S3 Pro
The eufyCam S4 supports color night vision using its integrated spotlights as well as infrared night viewing.
This differs from the eufyCam S3 Pro, whose MaxColor Vision system is one of that model’s main strengths.
The S3 Pro uses a large-aperture fixed camera designed to preserve color in very low light without relying as heavily on visible illumination.
The S4’s advantage is therefore not that it automatically replaces the S3 Pro in every night-time situation.
The S4 is stronger when you want tracking and changing viewpoints. The S3 Pro remains attractive when your priority is a high-quality fixed view and its MaxColor low-light approach.
Local storage and no required monthly fee
This is one of the strongest reasons to consider the S4 for Quiet Smart Living’s security-camera strategy.
The exact 2-Cam Kit reviewed here includes HomeBase S380.
HomeBase provides local storage rather than forcing recorded security footage into a recurring cloud-storage plan.
The HomeBase includes built-in storage and can be expanded substantially with additional compatible storage.
That means the core security system can record and manage footage locally without requiring a monthly recording subscription.
This does not mean eufy has no optional paid services. It means the camera’s fundamental recording proposition does not depend on paying a monthly cloud-storage fee.
Why HomeBase S380 matters
The S4 can operate as a standalone camera, but the HomeBase adds much of the value behind the complete system.
With HomeBase S380, the system can provide:
- centralized local storage;
- expanded storage capacity;
- BionicMind facial recognition;
- cross-camera tracking;
- combined event management;
- additional AI processing; and
- 24/7 Smart Snapshot support.
For that reason, the 2-Cam Kit with HomeBase is the configuration that makes the most sense for this review.
It represents the complete local-first security proposition rather than reviewing a single add-on camera in isolation.
SolarPlus 2.0 reduces routine charging
Each S4 camera uses a rechargeable battery and SolarPlus 2.0 solar charging system.
The solar panel is detachable, which gives you more flexibility than a camera where the panel is permanently fixed to the camera body.
You can mount the panel where it receives better sunlight while positioning the camera according to the security view you need.
Eufy states that around one hour of direct sunlight per day can provide enough solar input for typical daily operation under suitable conditions.
Actual solar performance will still depend on:
- camera activity;
- number of recordings;
- PTZ movement;
- temperature;
- shade;
- panel orientation; and
- seasonal sunlight.
So solar should be treated as a way to reduce manual charging rather than a guarantee that every installation will remain permanently full.
Can the EufyCam S4 record 24/7?
Yes, but not from solar and battery power alone.
For continuous 24/7 recording, the S4 needs to be connected to continuous external power.
Suitable storage must also be configured.
On its normal battery and solar setup, the S4 is better understood as an event-based security camera that supplements its operation with Smart Snapshot features.
This distinction matters because “supports 24/7 recording” can otherwise sound as though the camera records continuously while running indefinitely from its solar panel.
It does not.
Radar and PIR detection
The S4 uses both radar and PIR motion detection rather than relying on only one type of motion sensor.
The system then adds AI classification for people, vehicles and pets.
That combination is intended to help reduce irrelevant alerts while still allowing the PTZ system to react to significant movement.
With HomeBase S380, additional BionicMind features can distinguish familiar faces from strangers.
Cross-camera tracking makes the 2-Cam Kit more interesting
The advantage of buying two S4 cameras is not simply that you have two independent views.
When connected through HomeBase S380, the system can use cross-camera tracking to connect activity across several camera positions.
For example, somebody might first appear at a driveway camera and then walk toward a side entrance covered by the second S4.
Rather than treating those as completely unrelated clips, HomeBase can help present the movement as part of one broader event.
That makes the system more compelling for larger properties where activity regularly moves between different exterior zones.
Smart-home compatibility
The current US eufyCam S4 supports Amazon Alexa and Google Assistant.
There is an important exception for Apple users.
Apple HomeKit is not currently supported by the US eufyCam S4 configuration.
This is worth checking carefully because compatibility can differ between eufy models and regional product pages.
Do not assume that compatibility listed for the S3 Pro automatically carries forward to the S4 simply because both belong to the same camera family.
EufyCam S4 vs EufyCam S3 Pro
This is now one of the most important decisions within eufy’s outdoor camera range.
| Feature | EufyCam S4 | EufyCam S3 Pro |
|---|---|---|
| Primary design | Fixed bullet + motorized PTZ | Fixed bullet camera |
| Main resolution | 4K fixed camera plus dual 2K PTZ | 4K fixed camera |
| Motorized tracking | Yes | No |
| Auto-framing | Yes | No |
| Hybrid zoom | Up to 8× | Fixed-camera approach |
| Night-color approach | Spotlight-assisted color night vision | MaxColor Vision |
| Solar | SolarPlus 2.0 | SolarPlus 2.0 |
| Radar + PIR | Yes | Yes |
| Local storage with HomeBase | Yes | Yes |
| Required monthly recording fee | No | No |
Choose the EufyCam S4 if
- you have a large outdoor area;
- people may move across several zones;
- automatic tracking is valuable;
- you want a fixed view and PTZ view at the same time;
- 8× hybrid zoom will help with distant activity; or
- you want eufy’s newer flagship-style outdoor system.
Choose the EufyCam S3 Pro if
- a fixed 4K viewpoint already covers the important area;
- you do not need motorized tracking;
- MaxColor low-light performance is a priority;
- you want a simpler camera design; or
- the S3 Pro is substantially cheaper when you buy.
The S4 is therefore not simply an S3 Pro with a higher model number.
It changes the camera architecture.
The main reason to upgrade is coverage and tracking, not merely resolution.
EufyCam S4 vs Ring Floodlight Cam 4K Pro
Both products target premium outdoor-security buyers, but their priorities are very different.
The S4 emphasizes solar operation, local storage, motorized tracking and avoiding a required monthly recording fee.
Ring’s premium Floodlight camera instead combines a fixed 4K camera with powerful integrated security lighting and the wider Ring ecosystem.
If your installation point already has mains power and strong security lighting is the main requirement, see our Ring Floodlight Cam Pro 2nd Gen Review.
If you want a wider comparison of Ring’s current light-and-camera systems, see our Best Ring Floodlight Cameras guide.
The S4 makes more sense when the priority is broad camera coverage, solar flexibility and keeping recorded footage local without making a monthly subscription central to the system.
What we like about the EufyCam S4
- Fixed 4K view remains available while PTZ follows movement.
- Motorized tracking covers more of a large outdoor area.
- 8× hybrid zoom is useful for distant activity.
- Local storage avoids making a monthly recording fee mandatory.
- HomeBase S380 substantially expands storage and AI capability.
- SolarPlus 2.0 reduces manual charging.
- Radar and PIR provide a stronger detection foundation.
- Cross-camera tracking makes multi-camera installations more useful.
- Continuous recording is available when direct power is provided.
What we do not like
- The S4 is physically more complex than a simple fixed camera.
- Its strongest features may be unnecessary for small areas.
- Continuous 24/7 recording requires direct power.
- Solar performance depends heavily on installation conditions.
- Apple HomeKit is not currently supported on the US S4 configuration.
- The S3 Pro can remain the more rational choice when tracking is unnecessary.
Who should buy the EufyCam S4?
The S4 is best suited to somebody monitoring a relatively large outdoor area where activity does not always stay inside one fixed camera frame.
It makes particular sense for:
- large driveways;
- detached homes;
- front and side yards;
- properties with several access routes;
- buyers who want local storage;
- people who want to avoid required cloud-recording subscriptions; and
- multi-camera eufy installations using HomeBase S380.
Who should skip it?
You probably do not need the S4 if one fixed camera already covers the entire area you care about.
A simpler camera may also be more rational when:
- the monitored area is small;
- motorized tracking adds little practical value;
- Apple HomeKit is essential;
- you want an inexpensive single-camera installation; or
- you already own an S3 Pro that covers the area well.
Is the EufyCam S4 worth it?
Yes, if its hybrid camera design solves a real coverage problem.
The S4’s value is not simply that it is newer than the S3 Pro.
Its strongest argument is that one installation point can maintain a fixed 4K overview while simultaneously using PTZ tracking to follow activity elsewhere.
Add local storage, HomeBase AI, solar charging and no required monthly recording fee, and the S4 becomes a particularly strong option for larger outdoor areas.
If avoiding recurring camera fees is one of your main priorities, see our Best Security Cameras Without Subscription guide to compare the S4 with other local-storage options.
But if a fixed 4K camera already sees everything you need, the S3 Pro remains highly relevant.
Do not pay for PTZ tracking merely because it is newer technology.
Check current eufyCam S4 2-Cam Kit pricing and availability on Amazon.
Frequently asked questions
Does the EufyCam S4 require a subscription?
No monthly recording subscription is required for the core local-storage system. The S4 can record footage locally, and the 2-Cam Kit reviewed here includes HomeBase S380 for centralized local storage and AI features.
Does the EufyCam S4 include HomeBase 3?
Yes. The exact Amazon 2-Cam Kit reviewed here, ASIN B0FH2W7XWH, includes HomeBase S380, which is also known as HomeBase 3.
Does the EufyCam S4 record in 4K?
Yes. Its fixed bullet camera records at up to 3840 × 2160 4K. The separate motorized PTZ system uses dual 2K imaging.
Does the EufyCam S4 rotate automatically?
Yes. The motorized PTZ camera can automatically track relevant movement while the fixed bullet camera continues monitoring its original view.
How much can the EufyCam S4 zoom?
The S4 supports up to 8× hybrid zoom through its PTZ camera system.
Can the EufyCam S4 record continuously?
Yes, but continuous 24/7 recording requires the camera to be connected to direct power rather than relying only on battery and solar operation. Suitable local storage and current firmware are also required.
Does the EufyCam S4 work without HomeBase?
Yes. Eufy says the S4 can operate as a standalone camera. HomeBase S380 adds larger centralized storage and features such as BionicMind recognition and cross-camera tracking.
Does the EufyCam S4 work with Apple HomeKit?
Not currently on the US configuration. Eufy’s current US documentation specifically lists Apple HomeKit as unsupported for the S4.
Does the EufyCam S4 work with Alexa and Google Home?
Yes. Eufy’s current US documentation lists Amazon Alexa and Google Assistant compatibility.
Is EufyCam S4 better than S3 Pro?
It is better when motorized tracking, changing viewpoints and wider property coverage matter. The S3 Pro remains a strong alternative when a fixed 4K view is enough and MaxColor low-light performance is more important than PTZ movement.
Is the EufyCam S4 solar powered?
It uses rechargeable batteries together with Eufy’s SolarPlus 2.0 solar charging system. The included detachable solar panels can help reduce the need for manual charging when installed with sufficient sunlight.