eufy Security eufy Video Smart Lock vs eufy Security Video Doorbell E340 (2026): Key Differences
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The eufy security eufy video smart lock vs video doorbell e340 comparison highlights two distinct entry solutions. Both devices offer 2K video resolution and local storage options for privacy. The primary difference lies in their function: one secures your door with facial recognition, while the other monitors your porch with dual cameras. You need to decide if you prioritize keyless entry or comprehensive visitor tracking. This guide breaks down the specs to help you choose.
Key differences
| Aspect | eufy Video Smart Lock E40 Facial Recognition | eufy E340 with Smart Display E10 |
|---|---|---|
| Primary Function | Smart lock with facial recognition | Video doorbell with dual cameras |
| Camera Configuration | Single 2K HD camera | Dual cameras (front and downward) |
| Power Source | 15,000mAh battery with 800mAh backup | Battery powered |
| Storage Type | Built-in 32GB local storage | Not listed |
| Connectivity | Matter | Not listed |
| Night Vision | Not listed | Color Night Vision |
Which one should you choose?
Choose eufy Video Smart Lock E40 Facial Recognition if
- You want to unlock your door using facial recognition
- You prefer a device with built-in local storage
- You need Matter compatibility for smart home integration
Choose eufy E340 with Smart Display E10 if
- You want to see deliveries on the ground with a downward camera
- You need color night vision for clear nighttime views
- You prefer a dedicated doorbell experience with a smart display
Verdict: Choose the eufy Video Smart Lock E40 if you need keyless entry and local storage. Pick the E340 if you want detailed porch monitoring with dual cameras and color night vision. Both provide 2K clarity for secure home access.
eufy Lock E40 vs E340 Doorbell
access method
The eufy Video Smart Lock E40 prioritizes keyless entry through facial recognition. This feature uses local storage for privacy and adapts to everyday look changes. It combines a 2K camera and doorbell into one unit. In contrast, the eufy E340 relies on a traditional doorbell button and motion detection. It does not include locking mechanisms or biometric entry. You choose the E40 for hands-free entry and the E340 for standard visitor alerts without physical access control.
power source
Power management differs significantly between these two devices. The E40 uses a large 15,000mAh rechargeable battery with an 800mAh backup. It claims up to six months of functionality. The E340 offers battery or wired power options. It uses a quick-release battery system for easy swaps. While the E40 provides a substantial internal battery capacity, the E340 allows for wired charging to avoid downtime. You get longer standalone life with the E40, but more installation flexibility with the E340.
viewing angle
Camera coverage is a key differentiator. The E40 provides a 135-degree head-to-toe view. This wide angle captures full-body details of visitors and deliveries. The E340 uses a dual-camera system. One camera faces forward for people, while another looks down at the floor. This setup fills in gaps near the ground. The E40 offers a single wide lens for comprehensive coverage, whereas the E340 uses two lenses for specialized angles. You get full-body framing with the E40 and detailed ground-level views with the E340.
smart home compatibility
Integration options vary between the products. The E40 supports Matter for connections with Apple Home, Google Home, Alexa, and SmartThings. It also integrates with the eufy Ecosystem and HomeBase 3 for advanced AI features. The E340 data does not list specific smart home protocols or platform compatibility. It focuses on the included Smart Display E10 for instant hands-free alerts. You benefit from broader third-party integration with the E40, while the E340 emphasizes its dedicated display interface.
storage type
Both devices offer local storage to avoid monthly fees. The E40 includes built-in 32GB of storage for footage. This keeps data private and accessible without subscriptions. The E340 data does not specify its storage capacity or type. It mentions a smart display but omits internal memory details. You have clear storage specifications with the E40, ensuring you know your limits. The E340 leaves storage details undefined in the provided data. You may need to check the app for E340 storage options.
Which device fits your entry needs
Users wanting keyless entry with local facial data
The E40 integrates facial recognition directly into the lock mechanism. It stores all biometric data locally on its 32GB drive, ensuring privacy without cloud dependency. The 15,000mAh battery lasts up to six months, and the 60 GHz radar reduces false alerts from pets or wind.
Buyers preferring a dedicated doorbell with visual display
The E340 pairs with the Smart Display E10 for instant hands-free alerts. Its dual-camera system captures both faces and the ground level. You get 2K clarity with color night vision up to 16 feet. The quick-release battery allows easy swaps to avoid downtime during charging.
Those seeking a single all-in-one security device
This model combines a smart lock, doorbell, and 2K camera into one unit. It features a 135-degree field of view for full-body coverage. Installation requires no drilling for most standard doors. It also supports Matter for integration with major smart home ecosystems like Alexa and Google Home.
The products compared
eufy Video Smart Lock E40 Facial Recognition
Best for: All-in-one front door security and access
- Video Resolution
- 2K
- Power Source
- 15,000mAh battery, 800mAh backup
- Field of View
- 135°
- Storage Type
- 32GB local storage
- Connectivity
- Matter
- Color
- Black
View on Amazon: eufy Video Smart Lock E40 Facial Recognition Affiliate link
This all-in-one device combines a smart lock, doorbell, and 2K HD camera with a 135-degree field of view. It uses facial recognition for keyless entry and stores footage on 32GB of local storage. You get a 15,000mAh battery with an 800mAh backup. It supports Matter for smart home integration. This unit suits those wanting a complete front door security solution without monthly fees.
Pros
- 2K HD video with 135-degree head-to-toe view
- Facial recognition unlocking with local data storage
- 32GB built-in local storage with no monthly fee
- 15,000mAh battery with 800mAh backup power
- 60 GHz radar reduces false motion alerts
Cons
- Camera streams are not supported via Matter
- Not compatible with round or non-standard faceplates
- Requires the eufy app for full features
Good fit if
- You want facial recognition for keyless entry
- You prefer local storage over cloud subscriptions
- You need a lock and doorbell in one unit
Skip if
- You have a round or non-standard deadbolt
- You require camera streaming through Matter
- You only want a lock without a camera
Verdict: eufy Security Video Smart Lock E40 offers a complete front door security system with 2K video and facial recognition. It fits homeowners who want keyless access and local storage without relying on cloud subscriptions.
eufy E340 with Smart Display E10
Best for: seeing visitors and packages clearly
- Video Resolution
- 2K Full HD
- Power Source
- Battery or Wired
- Storage Type
- No Monthly Fee
- Night Vision
- Color Night Vision
- Indoor Receiver
- Smart Display E10
View on Amazon: eufy E340 with Smart Display E10 Affiliate link
The eufy Security Video Doorbell E340 uses a dual-camera system to capture both faces and packages on the ground. It records in 2K Full HD clarity and features color night vision for clear views up to 16 feet. You can power it via battery or wired connection. The included Smart Display E10 provides instant hands-free alerts when motion is detected or the doorbell is rung.
Pros
- Dual cameras cover faces and the floor area
- 2K resolution reveals detailed visuals
- Color night vision up to 16 feet
- Battery or wired power options available
Cons
- Requires the separate Smart Display E10 for instant hands-free viewing
- Battery mode requires swapping spare batteries to avoid downtime
- Night vision effective range is limited to 16 feet
Good fit if
- You want to see packages left at your door
- You prefer battery installation for easy setup
- You need clear night vision for your entryway
Skip if
- You want a single camera unit without extra hardware
- You need night vision beyond 16 feet
- You prefer a wired-only power source exclusively
Verdict: The eufy Security Video Doorbell E340 fits homeowners who need comprehensive coverage of both visitors and packages. It is a solid option if you are willing to use the Smart Display for instant alerts.
Specifications side by side
| Spec | eufy Video Smart Lock E40 Facial Recognition | eufy E340 with Smart Display E10 |
|---|---|---|
| Video Resolution | 2K | 2K Full HD |
| Power Source | 15,000mAh battery, 800mAh backup | Battery or Wired |
| Field of View | 135° | not stated |
| Storage Type | 32GB local storage | No Monthly Fee |
| Night Vision | not stated | Color Night Vision |
| Connectivity | Matter | not stated |
| Indoor Receiver | not stated | Smart Display E10 |
| Resolution | 2K | 2K |
| Color | Black | not stated |
| Application | Front Door | not stated |
| Dimensions | 2.99 × 1.27 × 8.03 inches | not stated |
| Model | T85M0 | not stated |
Frequently asked questions
Does the eufy Video Smart Lock E40 have a camera?
Yes, the E40 includes a built-in camera. It records 2K video to capture visitors at your door. This allows you to see who is there while using the facial recognition feature for keyless entry. The camera is integrated directly into the lock unit.
How does the eufy Video Doorbell E340 handle night vision?
The E340 provides color night vision. This feature helps you see clear details in low-light conditions. It ensures you can identify visitors or packages even after dark. This is a key difference from standard infrared night vision found in many other doorbells.
Can I use the E340 doorbell without a wired power source?
Yes, the E340 is battery powered. You do not need to connect it to existing doorbell wiring. This makes installation easier for many homes. You simply charge the battery and mount the device to your door frame.
What is the main difference in storage between the E40 and E340?
Both devices support local storage for privacy. The E40 lock features a 32GB drive to store facial data and video locally. The E340 doorbell also offers local storage options. Neither device requires a cloud subscription for basic operation.
Does the E40 lock require a smartphone app to unlock?
The E40 uses facial recognition for keyless entry. You can unlock the door without a phone if your face is recognized. The app is used for viewing footage and managing settings, but physical access relies on the biometric sensor.
What resolution video do both eufy devices record?
Both the E40 lock and the E340 doorbell record 2K video. This resolution provides clear, detailed images of visitors. You can see faces and package labels more easily than with standard 1080p cameras. Both units prioritize high-definition clarity.
Is the E40 lock suitable for all door types?
The E40 is designed for front door applications. It fits standard door frames and integrates with the lock mechanism. You should check your door dimensions before purchasing. It is not intended for side or back doors without specific adapters.