Looking for a budget-friendly, subscription-free security camera? I've been hands-on with the IMOU Cell 3C, and it could be exactly what you need

IMOU Cell 3C: two-minute review

Founded in 2015 as a spin-off from the Chinese surveillance giant Dahua Technology, Hangzhou-based IMOU has quickly established itself as a major player in the value segment of the smart home market. While other brands such as Reolink and Ring target the premium 4K bracket, IMOU's strategy with the Cell 3C seems to be to provide high-end features at a price that undercuts most of its major rivals.

Like the more expensive Baseus Security S2, the IMOU Cell 3C features a built-in solar panel mounted directly to the top of the camera body. However, while the Baseus features a clever motorized tracking system to follow the sun, the IMOU offers simpler manual adjustment. To maximize power you simply angle the 2.2W panel towards the sky, making sure you connect the USB cable supplied to the camera’s USB-C input. Alternatively, if the camera doesn’t have direct access to the sun, you can mount the solar panel separately in a sunnier location using the bracket provided.

Whereas many security brands — particularly Amazon-owned Ring — charge a large monthly subscription to store recorded clips, one of the most compelling reasons to buy IMOU’s Cell 3C is the ability to store clips locally using a MicroSD card up to 256GB (not provided). Not only does this save you a significant amount in annual monthly subscription fees, it also ensures that potentially sensitive data stays within the home rather than on a remote server.

That said, if you don’t want to store recorded clips on a MicroSD card, it's possible to sign up to IMOU’s subscription service from £3.49 (about $5 / AU$7) a month — see the 'Price and Availability' section below.

Designed to be installed on the outside of a property with a clear view of the sky, the IMOU Cell 3C is supplied with a reasonably sturdy mount complete with wall plugs and screws.

I installed it on the outside of a garden office in my back garden at a height of around two meters. However, it can easily be installed in a front porch or high up on the outside of your main property (remembering you will still need to access it for recharging every few months unless you live in a very sunny climate).

Whereas some outdoor models are dual-band Wi-Fi compatible (some will even work on 4G/5G cellular networks), the IMOU is only compatible with the 2.4GHz band. However, it connected to my broadband repeater at the back of the house without any problems. Featuring IP66 waterproof rating, IMOU claims the Cell 3C will work in temperatures between -20 degrees centigrade and 50 degrees centigrade, but this wasn’t put to the test.

Once installed, which takes around 20 minutes, it’s simply a case of downloading the IMOU Life iOS/Android app and adding the camera via the QR code on the side of the device. Unlike some apps, which boast very user-friendly menus (particularly those from companies such as Ring and Blink), IMOU’s app is much more difficult to navigate around.

That said, it offers everything you need when setting up. For example, you can select ‘activity zones’ where you want it to capture footage, such as a locked door or window, and ‘non-detection zones’ where you don’t want it to record such as a neighbour’s garden or a main road. You can also set the device to only operate during certain hours, such as after dark, and only alert you if it detects a human rather than movement from a tree or a car going past.

One unusual feature is a time-lapse mode that will automatically capture images at selected regular intervals. Pre-set modes include cloud movements (10secs), flowers (five minutes) and building construction (50 minutes). Alternatively, you can set the timer manually to take shots between 10 seconds and six hours.

Finally, to help deter burglars a built in 110dB siren and reasonably powerful spotlight (in flashing or solid modes) are also on board. These can be activated manually or, for the really paranoid, automatically when the devices senses movement. There’s also a built-in speaker and microphone for talking to someone on your property.

IMOU Cell 3C: price and availability

• Costs $55 / £49 / AU$129
• Available since September 2024
• Sold in US / UK / Australia

Typically, outdoor security cameras retail for between $200 / £150 / AU$300 and $250 / £200 / AU$400. So with a price tag of around $55 / £49 / AU$129, the IMOU Cell 3C certainly is excellent value for money — especially when you consider it comes with its own solar panel.

Also, whereas many manufacturers are effectively able to subsidize the price of the hardware through hefty monthly subscriptions, with the IMOU Cell 3C this isn’t necessary. Instead you can buy a MicroSD card for under £20 which can store up to 256GB of video footage — a far cheaper option than a monthly subscription.

However, if you really do want to pay for a monthly subscription there is that offer too. IMOU offers three subscription tiers. For £3.49 (about $5 / AU$7) a month IMOU Protect Basic provides seven days of cloud storage and AI detection, while for £5.29 (about $7 / AU$10) a month IMOU Protect Plus offers 30 days of cloud storage and AI detection.

Best of all is IMOU Protect Pro (£9.99, or about $13 / AU$19 per month), which not only supports multiple devices and 30 days of cloud storage, but also offers additional functionality such as Descriptive Alerts — summaries of what was detected so you know what happened without having to watch the whole video (much like Ring's AI-generated video descriptions).

• Value score: 5/5

IMOU Cell 3C: design

• MicroSD card slot for local storage
• Flexible battery/solar power options
• Lightweight tubular design

Like the Baseus Security S2 camera, the IMOU Cell 3C is a long, tubular device that — at first glance — looks more like a Bluetooth speaker than a security camera. Of course, the big giveaway is the solar panel that sits on top of the camera to provide additional power. This connects to the camera via a cable to a USB-C socket located on top of the device.

Screws and wall plugs are provided for mounting the bracket to the wall and the solar panel can either be unscrewed and mounted separately or kept on top of the camera (we opted for the latter). I had initially worried that the tubular design might be a little unstable when mounting to a wooden summerhouse/office. However, it’s actually pretty lightweight, tipping the scales at just 360g (13oz) without feeling too flimsy.

Underneath the camera there’s a weather-sealed flap covering the USB-C socket. This is used for charging the camera via the mains (a 5000mAh rechargeable battery is built in). Here you’ll also find a slot for a MicroSD card, supporting up to 256GB for local recording, as well as sync button for use during set up as well as a modest built-in speaker.

On the front of the device, there’s the 2K lens for capturing recordings, PIR (passive infrared) sensor for accurate movement detection, a small microphone for two-way audio and a reasonably powerful spotlight. Finally, there’s the solar panel on top of the camera which can be manually adjusted towards the sun to maximize power.

• Design score: 4/5

IMOU Cell 3C: performance

• Reasonable 2K image
• Stable video connection over 2.4GHz Wi-Fi
• Reliable human detection and fewer false alerts

When it comes to performance, outdoor security cameras face multiple challenges. First of all, there’s the issue around power and how to keep the device running without a mains connection nearby. Thankfully IMOU has addressed fitting its device with a 5,000 mAh rechargeable lithium-ion battery and a solar panel. As a result, even after using regularly for a couple of weeks, the device still has over 90% charge.

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Then there’s the issue around video stability, given the distance between the home router and the security camera. Again, this didn’t prove to be an issue at all, with the device maintaining a steady connection throughout the testing period. Finally there’s the images themselves, both in terms of quality and quantity.

Given this is a 2K camera, image quality certainly isn’t the sharpest I’ve seen — nowhere near as good as from the 4K Baseus Security S2 camera which we reviewed last year (and which this model so closely resembles). Night vision is particularly disappointing, even with the reasonably powerful spotlight on.

However, where the IMOU excels is in the quantity of images. Whereas some models trigger loads of annoying false alerts, the IMOU records only what’s useful, thanks in part it seems to dedicated human detection algorithms.

• Performance score: 3.5/5

Should you buy the IMOU Cell 3C?

Buy it if

Don't buy it if

IMOU Cell 3C: also consider

Not sure if the IMOU Cell 3C is the right security camera for you? Here's how it stacks up against two of its closest rivals.

Baseus Security S2

An outdoor camera with an innovative twisting solar panel to maximize power from the sun. Features 4K video resolution and a MicroSD card slot for storing footage locally.

Read our full Baseus Security S2 Outdoor Camera review

View Deal

Eufy 4K S330 Security Camera

An innovative battery- and solar-powered camera, the Eufy 4K S330 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

View Deal

How I tested the IMOU Cell 3C

• I used the camera outdoors
• I installed it myself
• I tested all the features, including the siren (the neighbors weren’t happy)

Testing a solar powered camera in a rainy UK environment is far from ideal. However, as luck would have it, spring sprung during testing and I was able to check out the effectiveness of the solar panel in the sunshine.

After two weeks of testing, battery levels are still over 90%, which seems pretty good — though in the depths of winter it would be a different matter of course. I particularly like the fact that, while the app isn’t the easiest to navigate,

I haven’t been overwhelmed with lots of false alerts when a tree has swayed too much or a bird has flown past. Instead, it just sends me a push notification and stores the video clip each time a human is detected!

For more details, see how TechRadar tests, reviews, and rates products.

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