Is the eufy Security eufyCam S3 Pro Add-on Cam worth it?
The eufy Security eufyCam S3 Pro Add-on Cam is a top pick with a 8.9/10 consensus score. Experts highlight one-time cost with $0 plan to fill a blind spot on an existing eufy system and same 1/1.8-inch maxcolor sensor and f/1.0 aperture as the full kits. Best for: Existing eufy HomeBase 3 owners who want one more local 4K angle with no new base and no subscription.
Affiliate link — we earn a commission at no extra cost to you
eufy Security eufyCam S3 Pro Add-on Cam
Wireless Security Camera
Expert consensus
How we scoreKey Features
- ✓ Single 4K solar-powered add-on camera, requires existing HomeBase 3
- ✓ MaxColor spotlight-free color night vision with 1/1.8-inch sensor at f/1.0
- ✓ On-device face recognition AI, no subscription, built-in 16 GB storage
- ✓ Built-in SolarPlus 2.0 panel, effectively maintenance-free outdoors
Best For
eufy Security eufyCam S3 Pro Add-on Cam vs. the alternatives
How the eufy Security eufyCam S3 Pro Add-on Cam stacks up against other Security options on price, expert consensus, and ecosystem support.
| Product | Price | Consensus | Works With | Verdict |
|---|---|---|---|---|
| eufy Security eufyCam S3 Pro Add-on CamThis page | — | 8.9/10 | — | Must Buy |
| eufy Security eufyCam S3 Pro 2-Cam Kit | $549.99 | 9/10 | — | Must Buy |
| Arlo Ultra 4K HDR Security Camera (3rd Gen) 4-Cam Kit | $499.99 | 7.4/10 | Apple HomeKit | Recommended |
| eufy Security eufyCam S3 Pro 3-Cam Kit | $549.99 | 8.8/10 | — | Recommended |
The eufy Security eufyCam S3 Pro Add-on Cam earns a 8.9/10 expert consensus, versus the Eufy Security S330 Video Doorbell at $109.99 list (8.7/10 consensus).
What Experts Agree On
What Experts Love
- ✓ One-time cost with $0 plan to fill a blind spot on an existing eufy system
- ✓ Same 1/1.8-inch MaxColor sensor and f/1.0 aperture as the full kits
- ✓ On-device face recognition stays free forever on the local HomeBase 3
- ✓ Built-in solar panel skips the recharging routine after install
Common Criticisms
- ✗ Requires an existing HomeBase 3 — not a standalone purchase
- ✗ 135-degree field of view and 8x zoom trail the Arlo add-on's wider lens
- ✗ This ASIN (B0DDQ3JTFX) returned no live listing as of 2026-08-06 — no genuine New single-camera replacement found; confirm stock before buying
Frequently Asked Questions
Is the eufy Security eufyCam S3 Pro Add-on Cam worth it?
The eufy Security eufyCam S3 Pro Add-on Cam earns a 8.9/10 consensus score and is rated "Must Buy". It is best for Existing eufy HomeBase 3 owners who want one more local 4K angle with no new base and no subscription. It ranks among the top picks in its category.
How much does the eufy Security eufyCam S3 Pro Add-on Cam cost?
We do not have a verified current price for the eufy Security eufyCam S3 Pro Add-on Cam. It earns a 8.9/10 consensus score with a "Must Buy" rating, which is strong value relative to the ~7.5/10 average for Security products. Check the live figure at the retailer before buying.
Who is the eufy Security eufyCam S3 Pro Add-on Cam best for?
The eufy Security eufyCam S3 Pro Add-on Cam is best for Existing eufy HomeBase 3 owners who want one more local 4K angle with no new base and no subscription. Experts rate it "Must Buy" with a 8.9/10 consensus.
How does the eufy Security eufyCam S3 Pro Add-on Cam compare to other Security options?
Among the Security products we have aggregated, the eufy Security eufyCam S3 Pro Add-on Cam ranks above average with a 8.9/10 score. See our full category comparison for head-to-head details.
Does the eufy Security eufyCam S3 Pro Add-on Cam need a hub or a subscription?
No mandatory subscription — the core features work without a monthly fee.
What are the best alternatives to the eufy Security eufyCam S3 Pro Add-on Cam?
If the eufy Security eufyCam S3 Pro Add-on Cam (8.9/10) is not the right fit, the closest alternatives in Security are Eufy Security S330 Video Doorbell, Ring Video Doorbell 4. Compare them on price, ecosystem support, and expert consensus to find your match.
What are the pros and cons of the eufy Security eufyCam S3 Pro Add-on Cam?
The main strengths of the eufy Security eufyCam S3 Pro Add-on Cam are one-time cost with $0 plan to fill a blind spot on an existing eufy system and same 1/1.8-inch maxcolor sensor and f/1.0 aperture as the full kits. The most-cited downside is requires an existing homebase 3 — not a standalone purchase. Overall, experts rate it "Must Buy" with a 8.9/10 consensus score.
Decided on the eufy Security eufyCam S3 Pro Add-on Cam?
Affiliate link — we earn a commission at no extra cost to you
Featured in these buying guides
See how the eufy Security eufyCam S3 Pro Add-on Cam ranks against the full field in our Security buying guides.
Shop similar on Amazon
Comparable Security picks you can buy today — each link goes straight to its current Amazon listing.
Sources & Methodology
Consensus score based on available data. See how we build consensus scores.
Affiliate disclosure: SmartHomeExplorer.com participates in the Amazon Associates program. We earn a commission from qualifying purchases at no extra cost to you.This is a consensus review — we did not test this product ourselves. Always verify current prices and availability before purchasing.
Independence notice: Smart Home Explorer is an independent publication. eufy and other product names, logos, and brands referenced on this page are the property of their respective owners and are used for identification purposes only. This review is not sponsored by, affiliated with, or endorsed by eufy or any other manufacturer named in this article.