Baseus Security S2 Outdoor Camera 4K review: It sees the light

For many households, outdoor cameras are the front line of home security. The devices watch over driveways, porches, and backyards, catching activity that doorbell cameras often miss. Baseus enters this space with two solar-powered models: the S1 Lite, a budget option with 2K resolution that I reviewed in September, and the higher-end model S2 reviewed here, which is aimed at buyers who want more muscle–including 4K resolution.

The Baseus Security S2 Outdoor Camera 4K review is the company’s flagship security camera, offering sharper video, smarter motion detection, and an unusual solar panel that tracks the position of the sun to keep its battery topped up around the clock.

The S2 is bigger and heavier than its S1 Lite sibling, measuring 6.5 × 2.8 × 3.0 inches and weighing just over a pound. The housing is made of polycarbonate with a clean white finish, and the solar surface is attached to its top (it’s not integrated into the camera body itself, as we’ve seen on some competing cameras). Baseus says the panel is coated with ETFE (Ethylene Tetrafluoroethylene), a durable fluoropolymer that boosts UV transmission, so the panel pulls in more sunlight. The camera boasts an IP67 weatherization rating—meaning it’s completely dust-tight and that it can withstand immersion in water for up 30 minutes (don’t miss our IP code decoder to learn more about ingress-protection codes). Baseus the camera has an operating temperature range of -4 degrees Fahrenheit to 122 degrees F (-20 to 50 C), making it durable enough for year-round outdoor use.

Its lens and 8-megapixel image sensor capture video in 4K Ultra HD resolution (3840 x 2160 pixels). Its 145-degree field of view is wide enough to cover a driveway or large portion of a yard, and there’s 8x digital zoom for closer inspection. Baseus claims you can expect usable detail out to about 12 meters (39 feet). In the dark, its built-in spotlight helps deliver full-color night vision, while its black-and-white night vision extends visibility even farther.

Where most budget cameras rely solely on passive infrared (PIR) sensors for motion detection, the Baseus S2 combines PIR with radar detection. Baseus says this dual system cuts false alerts by as much as 99 percent. On top of that, the camera’s onboard AI can distinguish between people, vehicles, pets; there’s facial recognition, too.

The camera is powered by a 7,800 mAh battery that’s continually recharged (assuming there’s sufficient sunlight) by an attached solar panel. This Baseus model differs from similarly equipped cameras in that the panel will rotate up to 40 degrees to either side of its barrel-shaped enclosure to follow the sun as it moves across the day. Baseus says this nearly doubles its charging efficiency compared to a fixed panel.

Video recordings are stored locally on a microSD card in capacities up to 512GB, so there are no subscriptions to worry about. Baseus doesn’t even offer an optional service for storing video in the cloud, but you’ll need to provide your own microSD card. Baseus uses AES + RSA encryption to keep these recordings secure.

The Baseus S2 is compatible with both Amazon Alexa and Google Assistant.

You’ll need the Baseus Security app to set up the S2. The app will walk you through adding the camera to your Wi-Fi network in just a couple of minutes, and it will then help you find the optimal installation location by displaying signal strength before you mount it. The cameras comes with the necessary screws, but you’ll need to provide the screwdriver or a drill.

Daytime video is crisp, with true 4K resolution bringing out details that often blur at lower resolutions. The 145-degree field of view was more than enough to cover the front gate to my yard. With spotlight motion detection enabled, the spotlight would kick on when the camera detected activity, capturing color video provided there was at least some ambient lighting. Switch to standard black-and-white night vision and you still get clear, detailed video that’s good enough to make out faces and movement, even in near-total darkness.

The dual PIR and radar system kept motion notifications manageable in my testing. The onboard AI did a solid job of distinguishing between people, vehicles, and animals, and you can further stem the alert tide by enabling activity and privacy zones where motion will be ignored, although you’re limited to two of each.

The Baseus Security S2 Outdoor Camera 4K’s solar panel is its standout feature. I was fortunate to have sunny conditions during my testing period, which enabled the battery to support round-the-clock operation. When the weather is less accommodating, you can take the camera down—it unscrews easily from its mount—and charge it with a user-provided AC adapter and the USB-A to USB-C cable you’ll find in the box.

The Baseus Security app is responsive and well laid out. Live view and replay modes load quickly, and you can toggle the spotlight, talk through the camera, or adjust notifications with a couple of taps. You also get mode presets—Home, Away, Schedule, and Disarmed—that make it easy to change how the camera behaves, or you can create your own custom modes if those don’t fit. Drawing activity and privacy zones is straightforward, and a sensitivity slider makes it easy to fine-tune alerts.

At $199.99 (discounted to $129.99 on the Baseus site and just $99.98 at Amazon at the time of this review), the Baseus S2 is priced in the midrange, but it offers more than you usually get at those prices. The sun-tracking solar panel is the most obvious differentiator, but its 4K video resolution, radar-assisted motion detection, and subscription-free local storage, are all pretty appealing. All that said, it’s worth remembering that with no backup solution for recorded video (there’s no cloud service, and the camera doesn’t support ONVIF or any of the other protocols that would make it feasible to store its video recordings on a NAS box or NVR (network video recorder), you will lose any forensic evidence if a burglar steals the camera.

If you can give the panel steady sunlight, the S2 is an appealing choice for anyone who wants sharp footage and reliable detection without another monthly bill.