Eufy S3 Pro vs S340 – Check Which One Is Best & Why?

eufy S3 Pro 2 & eufy S340 share many similarities, but there are also important differences, such as quality, performance, features, design, and connectivity. If you want the best one between them, I Would recommend the eufy S3 Pro 2 rather than the eufy S340. 

Table Of Contents hide
1 Why Do I Recommend The eufy S3 Pro 2?
2 Side By Side Comparison
3 What Common Both Can Do?
4 Common Features

Why Do I Recommend The eufy S3 Pro 2? 

  • The eufy S3 Pro 2 features a true 4K Ultra HD sensor for sharper image clarity and easier identification of faces and license plates, while the eufy S340 uses a dual-lens setup with 3K wide and 2K telephoto resolution.
  • eufy S3 Pro 2 includes radar-assisted motion detection for more accurate movement tracking and fewer false alerts, whereas the eufy S340 relies on standard PIR and AI motion sensing.
  • It comes with MaxColor Vision technology to deliver full-color night footage even in extremely low light, while the eufy S340 depends on a spotlight for color night vision.
  • The eufy S3 Pro 2 supports HomeBase storage expandable up to 16 TB for long-term local video retention, whereas the eufy S340 has only 8 GB of fixed internal storage.
  • eufy S3 Pro 2 features SolarPlus 2.0 integration for faster and more efficient solar recharging in mixed lighting conditions, while the eufy S340 uses a detachable solar panel with lower conversion efficiency.
  • It includes dual microphones with noise reduction for clearer two-way conversations, whereas the eufy S340 uses a single mic setup.
  • The eufy S3 Pro 2 integrates radar-based object filtering for distinguishing between humans, pets, and vehicles more precisely, while the eufy S340 relies primarily on AI classification from image data.

Maybe the eufy S340 price can make you comfortable because it’s a little bit cheaper than the eufy S3 Pro 2. But you have to compromise all the above-mentioned features. Now the Decision is Yours. I hope it was helpful to choose the right one.

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Side By Side Comparison

Featureeufy S3 Pro 2eufy S340
DesignFixed-view bulletPan-tilt dual-lens
Max video resolution4KWide 3K + Tele 2K
Zoom typeDigital8× hybrid
Low-light techMaxColor/true color nightSpotlight color + IR
Motion sensingRadar + PIRPIR + AI tracking
Spotlight outputHigh-intensity integratedIntegrated, lower output
AudioDual-mic noise reductionSingle/dual-mic with pan/tilt motor
Local storageHomeBase8 GB eMMC onboard
Hub requirementRequires HomeBaseStandalone
PowerBattery + SolarPlus 2.0Battery + detachable solar
Charging flexibilitySolar / plug-in / batterySolar / battery
Smart detectionOn-device AI + radar filteringOn-device AI + auto-tracking
Detail at distance4K fixed sensorTelephoto lens advantage
Install footprintCompact, fixed mountLarger, motorized base
Weather ratingIP67Outdoor-rated
Operating tempWider rangeStandard outdoor range
EcosystemDeep HomeBase featuresDirect app + optional HomeBase
PriceCheck eufy S3 Pro 2 PriceCheck eufy S340 Price

What Common Both Can Do?

  • Brand: Both cameras are developed by eufy, ensuring a consistent design philosophy and integration across the same smart home ecosystem.
  • Video compression: Each model uses the H.265 codec, which delivers efficient video storage and streaming with reduced bandwidth usage and smaller file sizes.
  • Two-way audio: Both cameras allow real-time communication through the built-in microphone and speaker, enabling users to speak and listen remotely from the app.
  • Color night vision: Each unit supports color recording at night, allowing better recognition of objects and people in low-light conditions compared to traditional IR-only footage.
  • Built-in microphone: Both devices include high-sensitivity microphones for capturing clear audio alongside video recordings.
  • Built-in speaker: Each model has a speaker to output voice messages or sound alarms directly through the camera.
  • Local storage option: Both support local video storage, enabling recordings to be saved without cloud fees or dependency on an internet connection.
  • Battery powered: Each model operates using a built-in rechargeable battery, allowing flexible wireless placement without direct wiring.
  • Solar charging support: Both devices can maintain power via solar energy, reducing maintenance and downtime for outdoor setups.
  • Weather resistant: Each camera is built to withstand outdoor environments, protecting against rain, dust, and temperature fluctuations.
  • 2.4 GHz Wi-Fi: Both models use standard 2.4 GHz Wi-Fi connectivity for stable long-range connections typical for outdoor installations.
  • Motion notifications: Each camera immediately alerts the user when motion is detected, ensuring quick awareness of potential activity.
  • No monthly subscription: Both cameras emphasize local AI and storage, so users can access smart detection and playback features without ongoing subscription costs.

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Common Features

Featureeufy S3 Pro 2eufy S340
Brandeufyeufy
Video compressionH.265H.265
Two-way audioYesYes
Color night visionYesYes
Built-in microphoneYesYes
Built-in speakerYesYes
AI human detectionYesYes
Vehicle detectionYesYes
Pet detectionYesYes
Smart alerts via appYesYes
Works with eufy Security appYesYes
Local storage optionYesYes
Battery poweredYesYes
Solar charging supportYesYes
Weather resistantYesYes
2.4 GHz Wi-FiYesYes
Motion notificationsYesYes
No monthly subscriptionYesYes
Price Checkn eufy S3 Pro 2 Price Check eufy S340 Price

FAQ

Does the eufy S3 Pro 2 record in higher quality than the eufy S340?
Yes, the eufy S3 Pro 2 records in true 4K resolution, providing sharper and more detailed footage, while the eufy S340 uses a dual-lens system with a wide 3K and telephoto 2K combination.

Do both eufy cameras work without a subscription?
Yes, both models can function fully without any paid subscription because they include on-device AI and local video storage options.

Can the eufy S340 rotate or pan for wider coverage?
Yes, the eufy S340 includes a motorized pan and tilt mechanism, allowing 360° horizontal and 70° vertical movement, while the S3 Pro 2 remains fixed in one direction.

Do both cameras support solar charging?
Yes, each camera supports solar power. The S3 Pro 2 features SolarPlus 2.0 integration, while the S340 has a detachable solar panel for continuous charging.

Can the eufy S3 Pro 2 and S340 detect humans, vehicles, and pets?
Yes, both cameras feature built-in AI detection capable of distinguishing between humans, pets, and vehicles to minimize false alerts.

Is night vision available on both models?
Yes, both cameras feature color night vision, but the S3 Pro 2 uses MaxColor technology for full-color imaging in very low light, while the S340 relies on spotlight illumination.

Do both eufy cameras support two-way communication?
Yes, both models have built-in microphones and speakers, allowing you to hear and talk to visitors directly through the eufy Security app.

Can I use local storage without relying on the cloud?
Yes, both cameras allow you to save recordings locally. The S3 Pro 2 uses HomeBase storage expandable up to several terabytes, while the S340 includes 8 GB of internal memory.

Are both devices weatherproof for outdoor use?
Yes, both are designed for outdoor environments with weather-resistant builds, ensuring reliable operation under rain, heat, and dust exposure.

Do both models use Wi-Fi for connection?
Yes, both cameras connect via 2.4 GHz Wi-Fi, providing stable performance suitable for home or outdoor distances.

Can both cameras send instant motion alerts?
Yes, each device immediately notifies users through the eufy Security app whenever motion or relevant activity is detected.

Is the eufy Security app compatible with both cameras?
Yes, the same eufy Security app controls both devices, allowing easy management, live viewing, playback, and customization of alert settings.

Do both cameras have rechargeable batteries?
Yes, each model uses a rechargeable internal battery system, enabling cordless installation and easy maintenance.

Can I install both models without hardwiring?
Yes, both cameras are designed for wireless use and can be installed anywhere within Wi-Fi range without needing physical power cables.

Do both cameras support smart home integration?
Yes, both models can integrate with compatible smart home ecosystems like Alexa or Google Assistant, allowing voice control and live feed access on smart displays.