eufyCam S4 review: a motorised, triple-lens 4K security camera

From security cameras and alarm systems, to the best robot vacuums and floor mops, Eufy produces some of my favourite smart home products. In fact, I rely on Eufy devices to keep my home clean and protected on a daily basis.

That’s why I was excited to see the company’s latest outdoor security camera, the S4. If you could draw up a list of every feature you might want from a camera, the S4 has it, plus some functions you probably didn’t even think of.

There’s 4K resolution and weatherproofing for outdoor use, of course. There’s also a solar panel for unlimited power (position and weather dependent), motorised panning and tilting for a 360-degree view, powerful night vision, and even multiple lenses at differing resolutions and zoom levels. On top of all that, there’s Eufy’s subscription-free approach to video storage, where files are saved locally instead of via a cloud storage subscription.

Naturally, all of this comes at a price. But if you’re looking for the very best security cameras on the market right now, the Eufy S4 ticks a lot of boxes. Is it the right camera for you? Read on to find out.

eufyCam S4 review: Price and availability

Given all of its high-end features, the Eufy S4 is a pricey security camera. Landing in November 2025, the S4 is available on its own for £249 / $299, or as part of a two-camera kit with Eufy’s HomeBase S380 hub, which adds expandable storage and extra AI features, for £549.

The latter, which is the bundle I’m reviewing here, is cheaper than buying two cameras and the hub individually. But it’s still an expensive bundle when simpler outdoor cameras can be bought for significantly less.

eufyCam S4 review: Design and setup

Anyone looking for a small, compact and discrete security camera will want to look elsewhere. The S4’s masses of features – especially its rotating camera module and solar panel – means it’s really quite bulky. Eufy’s S3 Pro might be a better option for shoppers wanting a more compact camera, and don’t mind that model’s lack of motorised movement.

Back to the new S4, and the solar panel can be attached either to the camera itself, or to another flat surface such as a nearby wall, fence or window ledge, and connected with an included cable. The solar panel can produce up to 5.5 watts of power and, Eufy says, can keep the S4 running with just one hour of direct sunlight per day.

The higher of the two camera modules is not motorised, but can be adjusted vertically by hand to get the view you need. The lower module is powered and can be rotated and tilted to give its two cameras a 360-degree view.

Setting up the S4 takes just a few minutes, via the Eufy smartphone app. Here, you can either connect the camera directly to your Wi-Fi network, or to the Eufy HomeBase hub if you already have one, or purchase the two-camera bundle with the included S380. If connected to your Wi-Fi network, the S4 records footage to its 32GB of internal storage, which can be increased to 256GB with a microSD card (not included). When connected to a HomeBase, the S4 records to that, which has 16GB of storage as standard, but can be upgraded to a massive 16TB with a compatible HDD or solid-state drive.

Installing the S4 is also easy, requiring just a couple of screws and optional wall plugs that are included in the box. The adjustable solar panel locks tightly into place once you’ve set it to the optimal position, and the camera itself fixes to the wall mount with a couple of integrated screws.

A quick disclaimer: Eufy provided me with the two-camera S4 bundle ahead of it going on sale. Unfortunately, these cameras could not be connected to my S380 hub due to a firmware issue. I was later provided with a second S4 bundle, which arrived after the cameras went on sale to the public. These have worked perfectly from day one, suggesting the pre-release firmware was incompatible with that of my six-month-old S380.

eufyCam S4 review: Performance and features

As you might hope for the high price, this camera works very well indeed. Footage from all three lenses is bright, sharp and clear, with lots of detail during the day and at night. The interface includes one-tap access to switch between the lower camera’s 1x and 3x zoom levels, and to move the same up, down, left and right. It’s possible to save four default views, making it quick and easy to see each of those views with a tap.

The camera is configured by default to follow movement when spotted, so it’ll zoom in if needed and pan or tilt to follow a subject, such as a person or vehicle. If you have more than one camera, they can follow a subject as they move from one camera to another. Set up one on the driveway and another in the garden, for example, and if someone walks from the street to your drive, then comes into the garden, one video clip will be created from footage gathered by both cameras.

Much of the S4’s feature set is shared with the Eufy S3 Pro, with the biggest being the former’s motorised movement and 3x optical zooming. There’s radar-based motion detection that uses AI to tell the difference between humans, vehicles and pets, and when used with the S380 HomeBase the camera gains facial recognition too. You can then label yourself and your family, along with frequent visitors like courier drivers and the postman, to help organise events and recordings.

As with the Eufy S3 Pro, the S4’s colour night vision is particularly impressive, recording in great detail in very low-light. Greyscale infrared night vision is also available, and there are four LED spotlights too. Continuous, 24-hour recording is possible, but only when the camera is hooked up to a direct power supply and not using its solar panel or battery.

My preferred power option is the included solar panel. While the integrated panel of the Eufy S3 Pro makes for a smaller, neater design, the S4’s separate panel is much larger and can be angled to capture more sunlight.

A dashboard in the Eufy app shows exactly how much power the panel generates and how much the camera uses, along with the battery percentage, so it’s easy to see if the camera can survive purely on solar power alone. In my case, the S4 reported between 100 and 200 mAh of energy consumption per day, but with up to 270 mAh of solar charging – so, in theory at least, the battery shouldn’t ever need plugging in. This will depend on how frequently the camera records and moves, but it’s a good sign nonetheless, and an improvement on the pair of S3 Pro cameras I’ve used for a few months.

Like other Eufy cameras, the S4 responds quickly to motion, alerts you via a phone notification (if you’ve configured it to do so), then follows the subject with its motorised panning and tilting. It even zooms in with that 3x lens for a closer look. After just a couple of days, you’ll likely realise it’s all the security camera you’ll ever need.

Buy it with the S380 HomeBase and you get extra functionality, like AI-powered facial recognition, and the option to record to the hub instead of the camera itself. The HomeBase has 16GB of storage as standard, but this can be increased by a whopping 16 TB by installing a compatible HDD or SSD.

My only real criticism (and it’s a minor one) is with the Eufy app, which suffers from the occasional bug and interface error. Some functions, like the security report summary page, can take a while to load, and sometimes the back button to return you to the previous menu page goes missing. It’s also quite a complex app, with a lot of settings to adjust. There’s a great amount of configurability here, but it could be laid out in a simpler way that doesn’t suggest it’s suffering from feature creep.

eufyCam S4 review: Verdict

I said this before but it’s worth repeating here: the Eufy S4 is probably all the security camera you’ll ever need. It does everything, from 4K video and solar charging, to motorised movement, AI-powered facial recognition, expandable and subscription-free storage, the option for 24/7 recording, and two views (at 1x and 3x zoom) captured simultaneously.

It’s not the smallest, prettiest or most discrete security camera around – and not the cheapest either. But it’s packed with functionality and works very well indeed, reliably responding to motion and capturing high-quality footage. It also keeps its battery charged up with the solar panel, has incredible night vision that produces full-colour video, even in the middle of the night, and connects to the rest of Eufy’s home security and alarm system.