eufy Security S340

By eufy Security · Indoor Security Cameras · Cleaning & Smart Home

  • Wide lens 2880 x 1620, telephoto lens 2304 x 1296
  • 8x hybrid zoom
  • 360 degree pan, 70 degree tilt
  • 8 GB built-in storage
  • 2.2 W solar panel

Lowest price seen
$159.99
from $159.99 at Costco · Checked Oct 11, 2026

Prices are snapshots. Check the current price with the store.

Summary

A wire-free outdoor security camera with a 3K wide-angle lens, a 2K telephoto lens, a 2.2 W solar panel and 8 GB of local storage, with no subscription required. Check the solar reports before you buy: eufy’s own documentation and owner forums describe charging that stops in cold weather and panels that sometimes stop charging at all.

Strengths

  • Dual-lens coverage: a 3K wide-angle and a 2K telephoto in one body, with 360° pan.
  • Local 8 GB storage with no subscription required; cloud is only an option with a HomeBase.
  • The solar panel kept a UK reviewer’s battery above 90% even on consecutive overcast days.
  • Consumer Reports called daytime video “about as sharp and clear as we’ve seen” and nighttime video “excellent.”
  • An owner who ran one for 30 months reports no hardware failures, with solar keeping the battery charged.
  • On-device human and vehicle detection runs without a hub or a plan.

Weaknesses

  • Solar charging is the most common owner complaint: forum and Reddit reports describe panels delivering 0 mAh despite adequate sunlight, some failing after about a year.
  • eufy documents that the battery stops recharging below 32°F (0°C) and drains quickly below 37.4°F (3°C).
  • One owner measured 0.556 W from a directly attached panel versus 1.615 W through the extension cable, so mounting and cabling matter.
  • Battery life is weather-dependent: the maker claims 3 months, while a long-term owner saw about 2 in deep shade.
  • No Apple HomeKit, IFTTT or Matter, no 5 GHz Wi-Fi, and no published IP rating at the $199.99 MSRP.
  • Consumer Reports rated data privacy “sub-standard.”

Verified specifications

ModelSoloCam S340, SKU T81701W1; eufy’s own pages, PCMag, PCWorld and Consumer Reports all treat it as an outdoor camera despite some retailer listings categorizing it as indoor.
Wide-angle lens3K, 2880 × 1620.
Telephoto lens2K, 2304 × 1296.
Zoom8× hybrid; The Independent notes that everything beyond 3× is digital.
Field of view135°.
Pan/tilt360° horizontal; the vertical tilt is listed as 60° on eufy’s product page but 70° by PCMag and PCWorld, an unresolved discrepancy.
Night visioncolor, spotlight-assisted.
Storage8 GB built-in eMMC; standalone mode is local-only, with cloud backup only through a HomeBase.
Solar panel2.2 W, removable, 4.7 × 4.7 in, with a 10 ft USB-C extension cable.
Batterybuilt-in, non-removable lithium-ion; eufy claims up to 3 months, and a full charge takes about 8 hours. (The Independent lists the battery as removable, contradicting eufy’s own FAQ.)
Connectivity2.4 GHz Wi-Fi only.
IntegrationsAmazon Alexa and Google Assistant; no Apple HomeKit, IFTTT or Matter.
AIon-device human and vehicle detection; face recognition and pet detection require a HomeBase 3 or S380.
Weathereufy says weather-sealed but publishes no IP rating.
Operating temperature-4°F to 122°F (-20°C to 50°C).
Detection rangeat default sensitivity 4, 20–26 ft (6–8 m) by day and 13–20 ft (4–6 m) at night.
Two-way audio, siren and white LED spotlight.
Warranty12 months limited (BH Photo listing).
In the boxcamera, solar panel, USB-C extension cable, mounting bracket, SYNC button.
Full research notes and sources

Solar panel reliability

The included 2.2 W panel is designed to keep the battery charged indefinitely, and when it works it works well: The Independent’s UK reviewer saw the battery stay above 90% on consecutive overcast days, and an owner in r/EufyCam reports the panel still keeping the camera charged after 30 months. The problem is consistency. Threads on eufy’s own community forum and on Reddit describe panels showing 0 mAh despite adequate sunlight, with owners pointing at firmware bugs, faulty panels, bad extension cables, pollen and dirt buildup, and cold weather. One owner measured 0.556 W from a panel mounted directly against the camera versus 1.615 W through the extension cable, which suggests the cable and the mounting angle matter as much as sunlight. Others report panels failing after about a year, and eufy sells replacements for about $29.99. Nobody has published a failure rate, so treat this as a known risk rather than a proven defect — but if your winters are harsh or your mounting spot is marginal, plan on manual USB-C charging through the year.

Battery life and cold weather

eufy claims up to 3 months per charge, and real-world reports cluster below that. A Reddit owner reported 79% battery left after 31 days with the solar panel attached; another saw the battery fall from 100% to 13% in 6 days despite solar; the long-term r/EufyCam reviewer gets about 2 months in deep shade. The battery is not a user part, and a full charge takes about 8 hours.

Cold is the harder limit. eufy’s own documentation says the camera stops recharging below 32°F (0°C) and discharges quickly below 37.4°F (3°C), and owners confirm cameras going dark through winter and resuming when temperatures rise. The operating range reaches -4°F, but the charging cutoff is the number that matters. If your winters spend weeks below freezing, expect to bring the camera inside and charge it by cable regardless of the solar panel.

Video, night vision and detection

The dual-lens setup is the main draw: a 3K wide-angle lens for coverage and a 2K telephoto for zooming in on a face or a plate, with both viewable at once. Consumer Reports called daytime video “about as sharp and clear as we’ve seen” and nighttime video “excellent,” with alerts averaging 2.9 seconds. PCMag found color night video “a bit dull” beside wired alternatives, and The Independent’s reviewer preferred infrared because the color spotlight fought a streetlight — a judgment about your lighting, not a defect. Beyond roughly 3× the zoom is digital.

Detection splits by hardware. On-device human and vehicle detection works standalone; face recognition and pet detection require a HomeBase 3 or S380. PCWorld’s reviewer had to tune sensitivity to cut false alarms, and the long-term owner reports the camera dropping motion detection every few months until it is restarted. One Reddit owner measured detection at 40 ft for people and 50+ ft for cars, well past the 15 m specification. The Independent noted the tracking can lose the plot when two people are in frame. Consumer Reports rated data privacy “sub-standard,” citing limited control and transparency over data collection and sharing — the strongest privacy warning in the test file.

Is it worth it?

At $120–160 it is strong value: dual-lens coverage, solar charging and local storage with no monthly fee, which is the combination that matters most here. At the $199.99 MSRP it is competitive rather than compelling — the lack of Matter, HomeKit and 5 GHz Wi-Fi is harder to excuse at that price, and Consumer Reports listed it from $159.99 at review time. PCMag’s 2024 review showed $119.99 with a promo code. There is no subscription to buy for standalone use; the optional HomeBase S380 hub and its 4-camera kit at $399.99 add cloud backup and face recognition. Running costs stay limited: a replacement solar panel is about $29.99 from eufy.

Which model this is

This page covers the eufy Security SoloCam S340, model T81701W1, the dual-lens pan-and-tilt camera with the 2.2 W solar panel. It works standalone over 2.4 GHz Wi-Fi or paired with a HomeBase S380; the two configurations are the same camera with different storage and AI options. The Amazon listing is ASIN B0CCYP6KFM. Some retailers categorize it as an indoor camera, but eufy’s own pages and every independent review treat it as the outdoor model it is.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Buying guides for this category

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