eufyCam S4 4K Solar Camera Review 2026: Still Worth It?

Home security cameras often look the same. The eufyCam S4 does not. It packs three lenses, a big solar panel, and smart tracking into one unit.

I looked at the specs, expert tests, and owner feedback. This review covers what works, what annoys people, and who should buy it. Read on to see if this camera fits your home and your budget.

In a Nutshell

• Three lenses in one unit: The eufyCam S4 has a fixed 4K bullet lens on top. Below it sits a 2K pan and tilt unit with a wide lens and a telephoto lens. You see the full scene and the fine details together.
• Solar power that works: The 5.5W detachable panel keeps the 10,000mAh battery full. Eufy says one hour of direct sun per day is enough. Most owners never touch the battery.
• Smart tracking: The camera spots a person and follows them. It zooms in on faces and zooms out for groups. Radar and PIR sensors cut down false alerts.
• No monthly fee: The camera has 32GB of built in storage, and you can add a microSD card. The optional HomeBase S380 adds up to 16TB of storage and face recognition.
• The price is high: The camera launched at $299 for a single unit. Kits with the HomeBase S380 cost much more. Cheaper solar cameras exist, but they offer fewer features.
• Best for large areas: Choose it for a big yard, a long driveway, or a busy entrance. Skip it if you want a small, hidden camera.

eufyCam S4 4K Solar Camera at a Glance

Last update on 2026-10-26 / Affiliate links / Images from Amazon Product Advertising API

The eufyCam S4 is Eufy’s first wireless camera that mixes a bullet camera with a pan and tilt camera. Eufy calls it a hybrid design. You get a fixed view and a moving view in one housing.

The top lens records in 4K with a 130 degree view. It watches your main entry point all day. This lens never moves, so you always have a steady shot of the key area.

The lower unit holds two 2K lenses. One is a wide lens with a 130 degree view. The other is a telephoto lens with a 46 degree view.

The lower unit pans a full 360 degrees and tilts 70 degrees. It can zoom up to 8X with hybrid zoom.

The camera has radar and PIR motion sensors. It has four LED spotlights, a 105dB siren, and red and blue warning lights. A 10,000mAh battery powers everything.

Eufy says the solar panel can refill the battery in about one hour of direct sun. That is a bold claim, and we test it later in this review.

Design and Build Quality

The eufyCam S4 is big and heavy. It looks like a classic security camera. It makes a clear statement that your home is watched.

That look helps if you want to scare off intruders. It does not help if you want a camera that blends in. Testers note that it is bulky compared to most battery cameras.

The housing feels solid. The plastic bracket is sturdy, and the camera slides on and locks with two security screws. This keeps thieves from pulling it off the wall with ease.

The solar panel sits on top by default. You can also detach it. A 10 foot cable connects the panel to the camera.

This detail matters for many homes. You can mount the camera under a roof edge for shelter. Then you place the panel on a fascia board where the sun hits it.

The battery is removable. You undo one security screw, clip off the cap, and slide it out. A USB C port on the battery lets you charge it indoors.

The camera is built for outdoor use. It should handle rain and heat well. Check the official weather rating before you mount it in a harsh climate.

Setup and Installation

Setup is simple for such a complex camera. You pair the camera with the Eufy app first. Then you pick a mounting spot and fix the bracket to the wall.

The box includes all screws and wall plugs. You do not need to buy extra parts. Most people finish the job in under 30 minutes.

You can also mount the camera under a horizontal roof overhang. This gives you more choices for tricky spots.

The fixed bullet lens tilts up and down by hand. You aim it at the area you care about most. The pan and tilt unit then handles the rest by motor.

Owners say the app walks you through each step. The camera joins your WiFi network without much fuss. A strong WiFi signal at the mounting spot helps a lot.

Test the signal with your phone before you drill. Stand where the camera will sit and check the bars.

Motion zones are the one fiddly part. You must set zones for both the fixed lens and the moving lens. The app makes this slow, so give yourself a few extra minutes.

Privacy zones work the same way. You set them for each camera view. It takes patience, but you only do it once.

Video Quality and the Three Lens System

Video quality is the biggest strength of the eufyCam S4. The 4K bullet lens gives sharp, well lit footage. Faces, license plates, and packages look clear in daylight.

The telephoto lens adds a closer look. Testers praise how much detail it captures at a distance. You can zoom in on a person without losing the wider scene.

Live view switches between the three lenses based on where motion appears. Recordings combine all the action into a single clip. You do not need to watch three feeds.

There is one catch with downloaded clips. The saved video stacks the bullet view and the pan and tilt view into one tall frame. The file is about 2,688 by 3,040 pixels.

Each view takes half the frame. So you do not get a full 4K image in the saved file. The live and recorded views in the app still look excellent.

You can set live view quality and recording quality on their own. Use lower quality for fast live views. Use the highest quality for saved clips.

This setting gives you speed and detail at once. Few cameras let you split these choices.

Top 3 Alternative for eufyCam S4

The eufyCam S4 costs a lot. These three cameras cost less or offer a different mix of features. Each one works well for a different type of home.

eufy Security SoloCam S340

The SoloCam S340 comes from the same brand. It has two lenses and records in 3K. It pans 360 degrees and tilts 70 degrees, so it leaves few blind spots. It also runs on solar power and has no monthly fee. Choose it if you want Eufy quality at a lower price.

Last update on 2026-10-26 / Affiliate links / Images from Amazon Product Advertising API

REOLINK Altas PT Ultra

The Altas PT Ultra records in 4K and pans and tilts 360 degrees. It uses a battery and a solar panel. It has auto tracking and color night vision. Owners say it needs a good amount of sun in winter. Pick it if you want a 4K moving camera on a tighter budget.

Last update on 2026-10-26 / Affiliate links / Images from Amazon Product Advertising API

REOLINK Argus 4 Pro

The Argus 4 Pro has two lenses and a 180 degree view in 4K. It runs on solar power and a battery. It has color night vision and WiFi 6. It does not move, so it suits a fixed spot like a porch or a garage. Pick it if you want a wide view at a low price.

Last update on 2026-10-26 / Affiliate links / Images from Amazon Product Advertising API

Night Vision and Lighting

Night vision is where the eufyCam S4 stands out. The camera has four LED spotlights, two on each camera unit. They give you full color footage after dark.

Testers saw clear color images past a back garden fence. That is about nine meters away. Few battery cameras reach that far in color.

The lenses use a wide f/1.6 aperture. A wide aperture lets in more light. This helps the picture stay bright and clean in dim places.

You can switch to infrared night vision instead. Infrared gives you black and white footage. It is less visible, so it suits quiet, hidden monitoring.

The camera also has red and blue warning lights. These flash when it detects a threat. A loud 105dB siren adds another layer of deterrence.

Audio is clear and loud. If you catch someone near your door, they will hear you. Two way talk lets you speak to a visitor or a delivery driver.

The spotlights drain more battery than infrared. If your area gets a lot of night activity, think about this. The solar panel helps cover the extra use.

Overall, the night footage looks sharp and natural. You can see faces, clothes, and colors. That detail helps when you need to describe a person to the police.

AI Detection and Auto Tracking

The eufyCam S4 uses AI to tell people, pets, and vehicles apart. This cuts down on useless alerts. You will not get a ping for every passing leaf.

The camera also uses radar and PIR sensors together. Two sensors give better accuracy than one. This pairing reduces false alarms from shadows, bugs, and wind.

The tracking feature is the star. When the bullet lens sees a person, the pan and tilt camera locks on. It follows the person even after they leave the bullet lens view.

Auto zoom frames the subject for you. It can zoom in on people up to 164 feet away. If more people enter the scene, it zooms out so nobody is missed.

Testers say tracking works very well. Even when the moving lens points the wrong way, it swings around fast. It finds the action without your help.

The camera alone detects people, pets, and vehicles. Face recognition needs the HomeBase S380. With the base, the camera can tell family from strangers.

The HomeBase also adds cross camera tracking. If you own several cameras, it merges footage of one person into a single event. You do not need to search through each camera.

Some owners say alert speed is good but not instant. Expert tests found alerts arrive in about six seconds on a strong WiFi link. That is fine for most homes.

Solar Power and Battery Life

Solar power is a major reason to buy this camera. The 5.5W panel is Eufy’s largest. Eufy says it boosts charging efficiency by 220 percent over its older 3W panel.

The company says one hour of direct sunlight keeps the camera running all day. In good sun, the panel collects 1,000 to 2,500mAh per day. The camera uses about 300 to 550mAh on an average day.

Real tests back this up. One reviewer saw the battery gain more than 10 percent in a single morning. That happened on an overcast day in London.

Owners with sunny spots report almost no battery care. One owner says the cameras ran for a year without a trip indoors for charging. Results depend on your location.

Shaded spots will struggle. Place the panel where it gets direct light for at least a few hours. The detachable cable makes this easy.

The 10,000mAh battery gives a good reserve. It can carry the camera through a few cloudy days. You can also charge it by USB C in an emergency.

You can connect the camera to AC power too. This enables 24/7 continuous recording. The AC adapter costs extra.

Heavy tracking and spotlight use will drain the battery faster. Watch the battery level in the app for the first few weeks. Then adjust your settings if needed.

eufyCam S4 2 Cam Kit with HomeBase S380

Last update on 2026-10-26 / Affiliate links / Images from Amazon Product Advertising API

You can buy the eufyCam S4 alone or in a kit. The 2 cam kit includes the HomeBase S380. Eufy also sells a 4 cam kit for large properties.

The camera works on its own with WiFi. It has 32GB of built in storage. You can expand that to 256GB with a microSD card.

The HomeBase S380 adds more features. It has 16GB of encrypted storage. You can add a 2.5 inch hard drive of up to 16TB.

Face recognition needs the HomeBase. The BionicMind AI learns the faces of your family and friends. It then tells you who is at the door by name.

Cross camera tracking also needs the base. It builds one timeline from several cameras. This saves time after an incident.

Prices change often, so check the current cost. At launch, the single camera cost $299. The 2 cam kit with the HomeBase cost $649. The 4 cam kit cost $1,149.

All storage is local. Eufy says full product features come with no monthly fee. Optional cloud features may need a subscription.

Is the kit worth it? Buy it if you want face recognition, more storage, or two cameras. Buy the single camera if you need one spot covered and want to save money.

eufyCam S4 Pros and Cons

Every camera has strengths and weak spots. The eufyCam S4 has many strengths. Its weak spots are mostly price, size, and app quirks.

Here is a quick summary based on expert tests and owner feedback.

Pros:

• Great image quality from all three lenses, in daylight and at night.
• Strong tracking and auto zoom that follow people with ease.
• A large 5.5W solar panel that keeps the battery full for most owners.
• Local storage with no required monthly fee, plus 32GB built in.
• Radar and PIR sensors that cut down false alerts.
• Color night vision with a long range of about nine meters or more.
• Simple wall mounting with all parts in the box.
• Fast live view with only about one second of delay.

Cons:

• The price is high compared to most solar cameras.
• The body is large and heavy, and it is easy to spot.
• Setting up motion and privacy zones is fiddly in the app.
• Saved clips are not true 4K because the two views share one frame.
• Live view can switch lenses on its own after a while.
• Face recognition and cross camera tracking need the extra HomeBase.

Final Verdict: Is the eufyCam S4 Worth Buying?

The eufyCam S4 is one of the most advanced home security cameras you can buy. It gives you a wide fixed view and a smart moving view together. The tracking, zoom, and night vision work very well.

The solar panel makes it low effort too. Most owners install it and forget about it. That is a big win for anyone tired of charging cameras.

The price is the main drawback. You pay a lot for the extras. If you only need to watch a small porch, a cheaper camera will do the job.

Buy this camera if you have a large yard, a long driveway, or a busy entrance. One S4 can do the work of two or three basic cameras. That saves money over time.

Skip it if you want a small, hidden camera. Skip it if you hate fiddling with app settings. The zone setup takes patience.

Our advice is simple. Pick the single camera for one key area. Pick a kit with the HomeBase S380 if you want face recognition and big storage. Either way, you get strong security with no monthly bill.

FAQs

Does the eufyCam S4 need a monthly subscription?

No. The camera stores video locally. It has 32GB of built in storage. You can add a microSD card for more space. Optional cloud features may need a paid plan.

Does the eufyCam S4 need a HomeBase?

No. The camera works alone over WiFi. The HomeBase S380 adds face recognition, cross camera tracking, and up to 16TB of storage. You only need it for those extras.

Is the eufyCam S4 really 4K?

The top bullet lens records in 4K. The two lower lenses record in 2K. Downloaded clips stack both views into one frame, so the saved file is not full 4K.

How long does the solar panel take to charge the battery?

Eufy says one hour of direct sunlight per day keeps the camera running. Testers saw over 10 percent gain in one overcast morning. Shade and winter weather slow charging.

Can the eufyCam S4 record 24/7?

Yes, but only with direct power. You need an AC adapter, which costs extra. On solar and battery power, it records when it detects motion.

How far can the eufyCam S4 see at night?

Color night vision reached past nine meters in tests. The auto zoom can track people up to 164 feet away in good light. You can also switch to infrared mode.

Can I use the eufyCam S4 in cold or rainy weather?

It is made for outdoor use. Cold weather can slow battery charging. Check the official specs for the exact temperature and weather ratings before you buy.

Is the eufyCam S4 better than the SoloCam S340?

The S4 has a 4K bullet lens plus a 2K moving unit. The S340 records in 3K with two lenses. The S4 offers better tracking and image quality, but it costs more.