I tested the Baseus Security S2 – a camera powered by a solar panel that rotates to follow the sun – and it really works

Baseus Security S2 Outdoor Camera 4K: two-minute review

Founded around 15 years ago, Shenzen-based Baseus Security is one of a number of Chinese brands whose products are now available across the world. Under review here is a new model, the Baseus Security S2 - an outdoor camera with a twist (quite literally). It’s the follow up model to the 2024 Baseus S1 Pro which was billed as the world’s first 4K security camera with a sun-powered tracking system.

Like its predecessor, the S2 also features an innovative twisting solar panel above the main camera unit to maximize power from the sun. However, the big difference is that the video resolution of this latest model has been improved from 2K to 4K. Rather than 8GB of local storage, the S2 upgrade also features a MicroSD card slot capable of storing up to 256GB local storage.

That’s particularly useful in avoiding costly monthly cloud storage fees and reducing a potential cybersecurity risk (hackers have been known to access video footage from security cameras stored in the cloud). Unfortunately, however, the memory card isn’t provided as standard so you will have to buy it separately.

Designed to be installed on the outside of a property with an unhindered view of the sky, the S2 comes with a reasonably sturdy mount complete with wall plugs and screws. Once installed, a process that takes around 20-30 mins, it’s simply a case of downloading the iOS/Android app and adding the camera via the QR code on the side of the device.

Whereas some outdoor models are dual-band Wi-Fi compatible (some will even work on 4G/5G cellular networks), the S2 is only compatible with the 2.4GHz, not the 5GHz, band. That said, we didn’t have any issues connecting the camera at the end of the garden to the broadband repeater at the back of the house. With an IP67 waterproof rating, the Baseus Security S2 can, claims the manufacturer, be used in temperatures from -20 degrees centigrade to 50 degrees centigrade – though it never got above 25 degrees centigrade during my testing.

Once the app is installed, it’s simply a case of tailoring the camera’s settings to suit your setup. This includes naming the camera depending on where it’s located (eg backyard) and checking to see if it captures all the areas you need it to.

The field of view of the Baseus camera is 145° which should be wide enough for most applications. You can set up privacy zones to exclude certain areas (handy to prevent accidentally capturing your neighbour’s property) as well as activity zones to detect motion in certain parts of the frame.

Whereas many outdoor security cameras are overly sensitive capturing footage of passing cars, even swaying tree branches, this doesn’t seem to be an issue with the Baseus Security S2. Although it is possible to adjust sensitivity between 1 and 5 we found on the standard 3 setting the camera it didn’t trigger any false positives. Baseus claims the inclusion of radar detection in addition to standard PIR (passive infra-red) detection, reduces false alerts by 99% so you only get relevant notifications.

Best of all are the facial recognition settings which enable you to add the images and names of family members or house mates on the app. It will then detect when it sees these faces on the camera and send you an alert telling you who it has spotted. It’s a feature that is now available on other outdoor security cameras but you usually have to pay a monthly subscription fee for it. With the Baseus, you can even set up motion alerts if the camera spots a vehicle or a pet. Alternatively, these can be excluded if you want to reduce the number of notifications you receive.

Baseus Security S2 Outdoor Camera 4K: price and availability

• How much does it cost? Baseus Security S2 £199, $US129, $AU129
• When is it available? Available since July 2025
• Where is it available? UK/US/AUS

Generally, outdoor security cameras and video doorbells are fairly cheap to buy. That’s because manufacturers can subsidize the price of them with monthly subscriptions, costing anywhere between £2.50 and £15 a month.

Not so the Baseus Security S2 outdoor camera. Rather than being stored in the cloud for a monthly fee, your footage is stored locally on a MicroSD card. And while you will have to buy a MicroSD card if haven’t got one already (I paid £10.99 for a 128GB Samsung EVO Select with SD adaptor), this is still a far cheaper option than being locked into an expensive subscription.

What’s more, the camera offers smart detection/facial recognition features as standard which are normally only available to premium users paying a subscription fee. Plus of course another bonus is the inclusion of solar panel.

That said, the Baseus Security S2 certainly isn’t the cheapest model on the block, particularly in the UK where prices are significantly more expensive than in the US and Australia. It’s also a lot more expensive than its predecessor, the Security S1, which you can currently get for £59 from Amazon. Like the S2, the S1 also features a rotating solar panel. However, the key differences are that it is only offers 2K resolution and 8GB of built-in storage rather than up to 256GB via a MicroSD card.

• Value score: 4/5

Baseus Security S2 Outdoor Camera 4K: design

• Simple installation
• Flexible battery/solar power options
• Sleek design

Looking more like a Bluetooth speaker than a conventional security camera, the all-white Baseus Security S2 is long tubular design with an innovative rotating solar panel mounted on top. Screws and wall plugs are provided for mounting the bracket on the wall and the camera can be angled easily to obtain the optimum view.

I had worried that the long and narrow design might make the camera a little unstable when mounted on my wooden summer house, but actually this wasn’t a problem at all. Set up didn’t take too long either (less than half an hour), though obviously if you are mounting on a brick wall you will need to use a drill and wall plugs for installation, which will take longer.

Underneath the device is a USB-C socket for charging the camera up via the mains (a 7800mAh rechargeable battery is built in), as well as a slot for a MicroSD card. Up to 256GB is supported but we used a 128GB card for recording. There’s also a sync button for use during set up and a modest-sized speaker underneath.

On the front of the camera there are PIR and radar sensors for detecting movement more accurately, a small microphone for two-way audio and a powerful spotlight capable of illuminating the night at distances of up to 12 meters.

Next to the circular radar sensor is a similar shaped camera lens, giving the impression of two eyes on a face! Capable of recording in 4K and providing a 145° Horizontal field, the camera displays a flashing blue light on the front of the camera when recording footage. Finally, there’s the solar panel on top of the camera which auto tracks the sun moving 40° to the left or the right from the horizontal position depending on the sun’s location.

• Design score: 4.5/5

Baseus Security S2 Outdoor Camera 4K: performance

• Excellent 4K image quality
• Stable video connection
• Smart detection is still work in progress

Never having tested a Baseus security camera before I didn’t really know what to expect. However, I was more than pleasantly surprised. There are really two main issues with outdoor security cameras.

Firstly, images can sometimes be a little unstable because of the longer distances between the router and the camera. Secondly, when you do eventually get a stable image, the onboard sensors are usually so sensitive that they end up recording far too much, draining the battery and creating lots of false alerts.

Not so the Baseus. On both counts, performance was flawless. Despite it only being compatible with 2.4GHz and not the 5GHz Wi-Fi frequency I didn’t have any signal problems at all.

What’s more, it also triggered fewer false alerts than other cameras I’ve tested, in part because of the combination of PIR (passive infra-red) and radar technologies to detect movement. Images are superbly detailed during the day and the spotlight is excellent for illuminating the garden at night to ensure high quality footage in the dark.

That’s not to say everything was perfect. When testing the camera’s two-way audio talking to my wife in the garden, I didn’t think the speaker was the best. Also it’s fair to say that the smart detection/facial recognition system (billed as being in beta) is still a work in progress.

During testing I added images from my phone’s camera roll of family members and friends to see if it recognzsed them when it saw them on camera. Sometimes it did, especially when standing right next to the camera, but often it didn’t. One on occasion it even mistook me for my dog which was a little odd (we don’t look much alike).

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Undoubtedly, what’s really good about the Baseus device is the rotating solar panel. While living in the UK and testing at the beginning of Autumn/Fall wasn’t ideal for testing, we had enough sun to get a pretty good idea of the panel’s performance. After a week of rainy days, power had dropped to 85% but just four days of sunshine was enough to bring it back up to 96%.

Considering I installed the camera practically under the eaves of a summer house and it only received around three hours of direct sunlight a day it really wasn’t bad at all. Usefully, a solar panel image appears on the display to show you when the camera is being powered by the sun and with the detection statistics option in the app you can see how much solar is contributing to the device’s overall power – a nice touch.

• Performance score: 4.5/5

Should you buy the Baseus Security S2 Outdoor Camera 4K?

Buy it if

Don't buy it if

Baseus Security S2 Outdoor Camera 4K: also consider

Reolink Altas PT Ultra

A very advanced home and business security solution boasting a large rechargeable battery and solar panel. Can record footage 12 hours a day for over a week with colour night vision facility.

Read our full Reolink Altas PT Ulta review

Eufy 4K S330 Security Camera

An extremely innovative battery and solar-powered camera, the Eufy can be used with the supplied 4G Sim card to capture recordings - ideal for those who live in areas with poor Wi-Fi/broadband.

Read our full Eufy 4K S330 Security Camera review

How I tested the Baseus Security S2 Outdoor Camera 4K:

• I used the camera outdoors
• I installed it myself
• I tested the facial recognition technology with family and friends

To test any outdoor security camera you really need to use it regularly over a period of time to get used to its quirks and idiosyncrasies. I decided to use this camera for a period of two weeks in the back garden. It was placed on my summer house at a height of about 2.5 metres and connected to a wireless repeater in my kitchen around 13 metres away.

During this period, we experienced a range of weather conditions to challenge the IP-67 rating of the camera. This included heavy rain and cloud followed by a period of around 4 to 5 days of sunshine. It was during this sunny period that the solar power really came into its own, charging the battery back to nearly 100% despite regular daily alerts via the app.