The real question with security cameras in 2026 isn't which one has better hardware — it's which one costs less to own over the next three years once subscription fees are factored in. The Eufy SoloCam S340 and Arlo Pro 5S 2K are both strong outdoor cameras, but their total cost of ownership diverges sharply based on how you want to store and access footage.
Eufy SoloCam S340
The Eufy SoloCam S340 is the better value for buyers who want to avoid ongoing subscriptions; the Arlo Pro 5S 2K has better cloud infrastructure and person/package/vehicle AI detection at a meaningful recurring cost.
Specs Comparison
| Spec | Eufy SoloCam S340 | Arlo Pro 5S 2K |
|---|---|---|
| Resolution | 3K (2880x1620) | 2K (2560x1440) |
| Field of View | 135° | 160° |
| Optical Zoom | 8x | None |
| Local Storage | 8GB built-in | No (requires base) |
| Subscription Required | No | Yes ($99+/yr) |
| Solar Powered | Yes — integrated | Add-on ($39) |
| Camera Price | ~$109-129 | ~$179-199 |
Hardware and Image Quality
The Eufy SoloCam S340 shoots at 3K resolution (2880x1620) with a 135-degree field of view. Its dual-lens design includes an 8x optical zoom telephoto camera alongside the wide-angle sensor, so you get both broad coverage and the ability to zoom in on a face or license plate without digital blur. The S340 is solar-powered and wire-free.
The Arlo Pro 5S 2K shoots at 2560x1440 — standard 2K resolution. It has a 160-degree field of view, broader than the Eufy but lower resolution overall. The Pro 5S adds color night vision (using integrated spotlights), siren capability, and a noise-canceling two-way audio system.
In daylight image quality, the Eufy S340's higher resolution and optical zoom give it an edge for capturing detail at distance. In nighttime color performance, the Arlo's integrated spotlight system produces more consistent color footage.
Subscription Costs: The Three-Year Reality
Arlo requires a subscription for cloud storage and AI detection. The Arlo Secure plan for one camera costs $12.99/month or $99.99/year in 2026. For three cameras, it's $17.99/month or $149.99/year. Over three years with three cameras, that's $450 in subscription fees minimum.
Without a subscription, Arlo cameras still function for live view but you lose cloud storage, AI detection (person/package/vehicle recognition), and activity zones. The hardware cost of an Arlo without a subscription is buying a live-view-only camera.
Eufy's SoloCam S340 stores footage locally on the camera's built-in 8GB storage (roughly 4-6 days of motion-triggered events) with no required subscription. Eufy's optional HomeBase 3 adds up to 16TB of local NAS storage for the full camera ecosystem. Eufy does offer a cloud subscription ($9.99/month), but the local storage is genuinely functional without it. Three-year TCO for Eufy: the camera price, period.
AI Detection and Alerts
Arlo's AI detection with a subscription is excellent — it distinguishes between people, packages, vehicles, and animals with good accuracy and sends specific alert types accordingly. The alert specificity reduces false positives from trees moving or cats crossing the yard.
Eufy's AI detection is built into the camera hardware and processes locally — no subscription needed. It handles person detection reliably. Package and vehicle detection are available on the S340 but not quite as accurate as Arlo's cloud-processed results.
For households that get frequent false alarm notifications and want clean, specific alerts, Arlo's AI with a subscription is more refined. For households that want basic but functional person detection with no ongoing cost, Eufy's local AI is good enough.
Installation, Battery, and Solar
The Eufy SoloCam S340 is truly wire-free with integrated solar. In a location with 4+ hours of direct or indirect sunlight daily, the solar panel keeps the camera perpetually charged with no need to remove and charge the battery manually. This is a genuine maintenance advantage for cameras mounted at height.
The Arlo Pro 5S has a removable rechargeable battery with a claimed 6-month battery life. In practice, heavy motion activity areas see 2-3 months per charge. Arlo sells a solar panel add-on (around $39) and a weatherproof charging cable.
Both cameras are rated for outdoor use in rain and temperature extremes. The Eufy's integrated solar design is the more convenient long-term solution for locations with reasonable sun exposure. The Arlo's removable battery is more flexible for shaded or indoor locations where solar isn't viable.
Eufy SoloCam S340 Strengths
- No subscription required — local storage included
- 3K resolution with 8x optical zoom for license plate capture
- Integrated solar panel for wire-free perpetual power
- 3-year TCO is just the camera price
Arlo Pro 5S 2K Strengths
- Best-in-class AI detection (person/package/vehicle/animal) with subscription
- 160-degree FOV — wider than Eufy
- Strong cloud infrastructure with 30-day storage on Arlo Secure
- Color night vision with integrated spotlight
Eufy SoloCam S340 Weaknesses
- Local storage only — no cloud redundancy unless you add Eufy Cloud
- AI detection less refined than Arlo's cloud-processed system
- HomeBase hub required for multi-camera local NAS setup
Arlo Pro 5S 2K Weaknesses
- Subscription is effectively mandatory for full AI features: $99-150/year
- Without subscription, camera is live-view only — no recordings
- Removable battery requires periodic recharging (2-6 months)
Best For
- Eufy SoloCam S340 Subscription-averse buyers who want solid outdoor coverage with no ongoing fees
- Arlo Pro 5S 2K Security-focused buyers who want the best AI detection and cloud infrastructure and will pay for it
FAQ
What happens if the Eufy camera is stolen or destroyed — is the footage lost?
If footage is stored only on the camera's built-in storage and the camera is taken, yes — you lose the footage. This is the key trade-off of local-only storage. Adding a Eufy HomeBase hub stores footage separately from the cameras, which mitigates this risk significantly.
Can you use Arlo without a subscription at all?
You can use Arlo for live view and manual clip saving to a USB drive connected to the Arlo SmartHub. But without the Arlo Secure subscription, there are no automatic recordings, no cloud storage, and no AI detection. For most buyers, the subscription is functionally required.