eufy SoloCam S340 vs eufyCam S3 Pro: Which 4K Outdoor Camera Should You Choose?

Choosing between the eufy SoloCam S340 and the eufyCam S3 Pro can be tough—both deliver crisp 4K video, but they're built for different homes and habits. In this comparison, we'll break down their key differences in power, storage, and smart features so you can pick the right one without overspending.

Whether you need a wire-free camera for a rental or a long-term solution with continuous recording, understanding these trade-offs will save you time and frustration. Let's dive into what sets these two popular eufy outdoor cameras apart.

Power and Installation: Battery vs. Wired

The SoloCam S340 is a battery-powered camera with an integrated solar panel, giving you true wire-free flexibility. You can mount it anywhere within Wi-Fi range—no need for existing wiring or professional help. The solar panel keeps the battery topped up in sunny conditions, though you may need to recharge manually during long cloudy stretches.

The eufyCam S3 Pro, on the other hand, is a wired camera that requires a power outlet and a connection to the eufy HomeBase S380 (sold separately). This makes installation more involved, but it enables continuous recording and advanced AI features like 24/7 monitoring. If you're comfortable with a bit of setup, the S3 Pro offers a more robust security solution.

• SoloCam S340: battery + solar, easy DIY install, no extra hub needed.
• eufyCam S3 Pro: wired power, requires HomeBase S380, supports continuous recording.

Storage and Privacy: Built-in vs. HomeBase

The SoloCam S340 stores footage locally on a microSD card (up to 128GB), with no cloud subscription required. This keeps your data entirely on-device, which is great for privacy-conscious users. However, you'll need to physically access the camera to retrieve clips, and there's no remote backup unless you use optional cloud storage.

The eufyCam S3 Pro records to the HomeBase S380's built-in storage (up to 1TB), with local encryption and optional cloud plans. This gives you more capacity and easier access through the eufy Security app, but you'll need to buy the HomeBase separately if you don't already own one. If you're building a multi-camera system, the S3 Pro's centralized storage is more convenient.

• SoloCam S340: microSD up to 128GB, no hub required.
• eufyCam S3 Pro: HomeBase storage up to 1TB, supports multiple cameras.

Smart Features and AI

Both cameras offer person, pet, and vehicle detection, but the eufyCam S3 Pro goes a step further with advanced AI that can recognize faces and differentiate between family and strangers. It also supports active deterrence with a built-in spotlight and siren, which can be triggered automatically based on activity zones.

The SoloCam S340 includes similar detection and deterrence features, but its AI is slightly less sophisticated—it doesn't do facial recognition. For most users, this is a minor difference, but if you want the most intelligent alerts, the S3 Pro is the better choice.

• Both: person, pet, vehicle detection, activity zones.
• S3 Pro adds facial recognition and more advanced AI.

Price and Value

The SoloCam S340 is generally more affordable upfront, and since it doesn't require a hub, it's a great entry point into eufy's security ecosystem. You can add multiple SoloCams without extra hardware costs. However, if you plan to expand your system with multiple cameras, the eufyCam S3 Pro's HomeBase can support up to 16 cameras, making it more cost-effective in the long run.

Consider your long-term needs: if you just need a couple of cameras, the SoloCam S340 is budget-friendly. If you're building a comprehensive home security system, the S3 Pro's scalability and continuous recording justify the higher initial investment.

• SoloCam S340: lower upfront cost, no hub needed.
• eufyCam S3 Pro: higher upfront cost, but scalable to 16 cameras.

Ultimately, the best eufy outdoor camera depends on your priorities. If you want a simple, wire-free setup with solar power and local storage, the SoloCam S340 is a fantastic choice. If you need continuous recording, advanced AI, and a scalable system, the eufyCam S3 Pro is worth the investment. Either way, you'll get reliable 4K security coverage for your home.