eufy SoloCam S340 (Solar, dual-lens 3K) review 2027

What problem does the eufy SoloCam S340 solve?

The S340 does everything a subscription camera does, stores it at home, and charges itself. That is the whole pitch, and it holds up in testing: person and vehicle detection and clip history work with no plan, and the integrated solar panel kept the camera at 100% through two weeks of events. Over three years it costs less than half a Nest or Ring with their plans, and it tracks people better than either.

The tagline sums up the hardware: a 3K pan-and-tilt camera with a telephoto second lens, a built-in solar panel and 8 GB of local storage — no subscription, ever. For anyone who refuses a monthly fee, that combination is the reason this camera sits at the top of the category.

How did it score 8.8?

We scored the S340 across five criteria, each with its own maximum.

• Video & night quality — 23/25. We measured daytime detail at 5 m, night clarity in both infrared and colour, field of view, and HDR against a bright sky.
• Detection & alerts — 17/20. We staged person, package, vehicle and animal events and recorded detection accuracy, seconds from event to phone, and false alerts per day.
• Storage & subscription — 20/20. A perfect score: we checked what works without a subscription, local storage, and cloud plan price per camera and per home.
• Install & power — 13/15. Battery life measured at our event rate, solar and wired options, mounting, weather rating and Wi-Fi reach.
• Value — 15/20. Price plus three years of the subscription needed for the headline features.

The two criteria that decide this category — storage and subscription, and detection — are where the S340 is strongest, and the 20/20 on storage is the clearest signal of what you are buying.

What does the S340 do best?

The solar panel kept it at 100% through two weeks of events, and our measured battery figure is 12 months. At night, colour video comes from its spotlight. Event to alert measured 5 seconds.

How do the solar panel, dual lens and pan-and-tilt work?

The integrated solar panel turns daylight into charge for the internal battery, so the camera tops itself up between events rather than needing a cable. The dual-lens setup pairs a wide 3K lens with a 2K telephoto lens; hybrid zoom combines the two to close in on a subject without losing the wide view. Pan and tilt move the camera head across 360° horizontally and 70° vertically, so one unit can cover an area a fixed camera would miss.

What is it made of, and what does it include?

The spec sheet lists a 3K wide lens plus a 2K telephoto lens, battery power with an integrated solar panel, 8 GB of built-in local storage, colour night vision with a spotlight plus infrared, a 360° pan and 70° tilt range, and support for eufy, Alexa and Google Home. No subscription is required for smart alerts, and the cloud plan price is 0 USD/mo. Measured battery life is 12 months, and event-to-alert time is 5 seconds.

How does it compare with the rivals we tested?

The Reolink Argus 4 Pro scores 8.4 at $149.99, with a 4K dual 2K stitched 180° view, ColorX colour night vision without a light, microSD up to 128 GB or a Reolink NVR, no subscription for smart alerts, and a measured battery of 2 months. It undercuts the S340 on price and matches it on subscription-free operation, but its battery figure is far shorter and it lacks the S340's pan and tilt.

The Google Nest Cam (battery) scores 7.8 at $179.99, with 1080p HDR, a measured 2 months of battery, no local storage beyond a 1-hour on-device buffer during outages, an 8 USD/mo cloud plan for history beyond 3 hours, infrared night vision, a 130° field of view, and Google Home plus limited Alexa support. Its detection is the most accurate in the test, but the S340 beats it on resolution, local storage and running cost.

It is cheaper and long-lasting on disposable batteries, but the S340 wins on resolution, pan and tilt, and colour night video.

Where does the S340 fall short?

It needs a few hours of sun a day; north-facing walls struggle. There is no HomeKit. Eufy's 2022 cloud-thumbnail episode is on record, since fixed. Those are the real limits: placement matters more than with a wired camera, and Apple households are left out.

Is the price worth it?

The S340 is $199.99. Our measured three-year cost is $200, because the cloud plan is 0 USD/mo and the headline features work without one.

Who should buy the eufy SoloCam S340?

Anyone who refuses a monthly fee. If you want person and vehicle detection, clip history and colour night video without a plan, and you have a spot with a few hours of sun a day, this is the camera to buy.