eufy Security E340 Floodlight Camera: problems, parts and running costs
Checked: 2026-10-17
Summary
The E340 is an outdoor pan/tilt floodlight camera with a 3K wide-angle plus 2K telephoto dual-lens system and subscription-free local recording on microSD or HomeBase 3. Its main weakness is the 15 fps frame rate, which blurs fast-moving subjects, and it requires wired power, so installation means an outdoor outlet or an electrician. WIRED listed it at $150 on sale from a $220 MSRP in June 2026 (Best Buy at $160); at that sale price it is strong value, and the only optional recurring cost is cloud storage from $3–4 a month.
Common problems and fixes
- 15 fps frame rate blurs motion — the main weakness in WIRED’s testing: video is generally crisp, but fast-moving subjects can appear blurry. No fix; this is a hardware limit to weigh against 30 fps competitors. [4][5]
- Wired power only — the camera cannot run on battery and must be plugged into an outlet, so you need outdoor power or electrician installation. No workaround. [4]
- Floodlight color is fixed at 4000K — the warm light temperature is not adjustable on the E340, unlike some competitors offering 3000K–6500K adjustment. No fix. [5]
- AI false alerts on large animals — onboard AI detects humans, pets and vehicles without a subscription, but WIRED’s testing found it sometimes flags a large cat as a human. Tune activity zones and detection settings in the app. [4][5]
- 8x zoom is part digital — the zoom figure combines optical and digital; the telephoto lens captures faces and license plates up to 50 feet away, but the digital portion is not like-for-like optical quality. [4][5]
No E340-specific warranty term could be confirmed: eufy’s support hub advertises a 30-day money-back guarantee and a hassle-free warranty for its products generally. WIRED’s reviewer used the camera for over a year at his back door without reporting hardware failure. [3][4]
Parts and consumables
No replaceable parts or consumables reported. Local recording uses a microSD card up to 128 GB (not included) or a HomeBase 3 hub (sold separately at $150); both are one-time purchases with no subscription required, and no part prices or replacement intervals were published. [4][5]
Yearly running cost
There is no mandatory monthly fee. Footage records locally to a microSD card (up to 128 GB, not included) or a HomeBase 3 (sold separately at $150) at no subscription cost. [4][5] Optional cloud storage starts at $3/month for a single camera with 30-day event history, or $4/month depending on the plan. [4][5] The camera is wired to mains power; no electricity cost figure was published.
When it is a good buy
WIRED’s June 2026 guide listed the E340 at $150 on sale (32% off) from a $220 MSRP, with Best Buy at $160 and eufy direct at $220; WIRED’s July 2025 review had it at $142–150 on sale from $220, and noted it occasionally drops in price. [4][5]
At $150 or below — strong value: 2000-lumen adjustable floodlight, dual-lens 3K/2K system with 8x zoom, AI tracking, local recording with no subscription, and IP65 weather rating. [4][5]
$150–$180 — still reasonable if floodlight brightness and local storage matter more to you than frame rate. [5]
$180–$220 — fair; compare alternatives with higher frame rates. [5]
Above $220 (MSRP) — weak value unless the dual-lens, 2000-lumen floodlight and subscription-free local recording are uniquely required. [5]
Arlo Wired Floodlight — the better choice if smooth motion matters more: 30 fps against the E340’s 15 fps. [5]
Google Nest Cam With Floodlight — also 30 fps; the better choice if you want Google’s ecosystem over eufy’s local-storage model. [5]