eufy Security S340 Wireless Security Camera with Solar Power and 360° View

Name: eufy Security S340 Wireless Security Camera with Solar Power and 360° View
Brand: Eufy
SKU: S340

By Winnowl Research Group | Updated July 2026

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Eufy | Wireless Home Security Cameras

MEDIOCRE

Winnowl Index

Winnowl Verdict

Even though the eufy Security S340 Wireless Security Camera just cleared our audit with a MEDIOCRE (59) Winnowl Index, that score is really a sign that you're paying for the name on the box more than the actual features you're getting. You’re looking at an Average Performance and Weak Value product here, but it’s coming from a company with Strong Brand Strength, so you're definitely paying a premium just for that name on the box. If you're looking at the eufy Security S340 Wireless Security Camera with Solar Power and 360° View, the specs show that you will likely find your local history wiped every few days, making this camera almost entirely dependent on a cloud subscription simply because that Storage Capacity of 8 GB sits 99% below the class average. Honestly, we’d suggest a hard pivot from this Brand Tax product; that 43% higher price tag results in 25% less hardware for your dollar than the class average, so you're really not getting much for the extra cash.

Market Value Index

Weak

$199.99

Overpriced Fair High Value

The Weak Value rating identifies a "Logo Tax" where the $199.99 cost is 25% less efficient than the $140.16 class average.

Performance Rating

Average

Strengths

Neutrals

Weaknesses

In its class, this product's performance is 3% above the average and earns an Average Performance rating. It’s a bit of a mixed bag: the Night Vision Range indicates you should effectively maintain visibility into the darker corners of your property where standard wireless cameras lose detail, but you may find that the 8 GB Storage Capacity means that you will likely find your local history wiped every few days, making this camera almost entirely dependent on a cloud subscription—so just make sure that's a trade-off you're okay with.

Brand Strength

Strong

Trust

Reliability

Customer Service

The Strong Brand Strength of Eufy comes from Strong Brand Trust and Strong Brand Reliability.

Available At

$199.99 View Deal

The Winnowl Lab Report

Specification	Value	Rating	Vs. Average	Winnowl Insight
Storage Capacity	8 GB	Mediocre	89% worse	Minimal event buffer. Very low local storage (under 16GB) is a bottleneck that leaves you with very little "offline" protection.
Night Vision Range	50 ft	Average	21% better	Extended night reach. Indicates a more powerful IR array and battery system, allowing for better perimeter security without external lighting.
Resolution	3 MP	Average	12% better	Wireless industry sweet spot. This resolution provides a reliable balance between clear evidentiary footage and manageable recharge intervals.

Ranking Factors

Insights

Value Rank: #34 out of 97.
Performance Rank: #37 out of 97.
Winnowl Quadrant: High Value

Strengths

ft night vision range exceeds the class average (41.46 ft) but is below the highest in class (100ft).

Neutral

Resolution of MP is close to the class average of 2.68 MP but below the class max of 8 MP.

Weaknesses

At GB, the onboard storage is in the bottom 10% of this class.

Comparison

Name	Winnowl Index	Value	Performance	Brand	Price	Resolution	Night Vision Range	Storage Capacity
eufy Security S340 Wireless Security Camera	MEDIOCRE 59	Weak	Average	Strong	$199.99	3 MP	50 ft	8 GB
Swann 4K Wireless 2-Pack Security Camera	ELITE 94	Exceptional	Strong	Strong	$99.99	8 MP	50 ft	32 GB
Swann 4KXTRMPK2-GL Xtreem 4K Wireless Security Camera	STRONG 83	Mediocre	Strong	Strong	$358.79	8 MP	50 ft	32 GB
HITELLARCAM HITELLARCAM2K Wireless Outdoor Security Camera	AVERAGE 79	Exceptional	Strong	Mediocre	$29.98	2 MP	100 ft	256 GB