eufy Security eufy Video Smart Lock Review (2026): A Spec-Based Look
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This eufy security video smart lock e40 review covers the eufy Video Smart Lock E40. It combines a 2K HD camera with a 135° field of view to monitor your front door. The device also features facial recognition for keyless entry. You get a 15,000mAh battery and 32GB of local storage. These specs define the unit’s core functionality. It is designed for everyday use and integrates with major smart home platforms. The lock handles extreme temperatures and water exposure. It offers a practical security solution for modern homes.
What stands out
- Facial recognition unlocks the door quickly and stores data locally for privacy.
- 2K HD camera with a 135° head-to-toe view captures clear details.
- 60 GHz radar detects human motion while filtering out pets and wind.
- 15,000mAh battery provides up to six months of use with an 800mAh backup.
- Built-in 32GB local storage requires no monthly subscription fees.
Who it fits
Good fit for
You should choose this lock if you want a single device that handles locking, video, and doorbell duties. The facial recognition feature suits families who want fast, keyless entry. The 135° view is ideal for monitoring packages and visitors clearly. Its IP65 rating makes it suitable for outdoor use in various climates. The Matter support ensures compatibility with Apple Home, Google Home, and Alexa. You will appreciate the local storage for keeping footage private without ongoing costs.
Who should skip it
Skip this model if you need a round or non-standard deadbolt faceplate, as it only fits standard US and Canadian single-cylinder locks. You should look elsewhere if you require camera streaming via Matter, as that feature is not supported. Mortise locks are also incompatible with this device. If you prefer cloud storage over local 32GB capacity, this lock may not meet your needs. Additionally, those who do not want facial recognition technology should consider the standard Video Lock variant without that specific sensor.
Verdict: The eufy Video Smart Lock E40 offers a robust all-in-one package with strong local storage and precise motion detection. It is a solid choice for standard doors seeking integrated video and access control.
Key specs explained
Video Resolution: 2K HD
This resolution provides higher detail than standard 1080p cameras. You can clearly identify faces and package labels in footage. This clarity helps you verify visitors or deliveries without zooming in. It is useful for security verification. Compare this with other smart locks that offer only basic HD video to ensure you get sharper images for your front door monitoring.
Field of View: 135°
A wide angle captures your entire body and the area beside the door. You see packages on the ground and people standing to the side. This reduces blind spots common in narrower lenses. It ensures you do not miss important context during deliveries. When shopping, compare this to locks with narrow views to ensure full coverage of your entryway.
Connectivity: Matter
Matter support allows the lock to connect with major smart home platforms like Apple Home, Google Home, and Alexa. This creates a unified ecosystem for your devices. You can automate routines across different brands. Note that camera streams may have limitations via Matter. Check compatibility with your existing hub before purchasing to ensure seamless integration.
Power Source: 15,000mAh battery, 800mAh backup
The large main battery offers extended usage between charges. The small backup battery activates automatically if the main power fails. This ensures the lock remains functional during outages or low power states. You get reliability without constant recharging. Compare this dual-battery system with single-battery locks to ensure uninterrupted access to your home.
Storage Type: Built-in 32GB local storage
Footage is saved directly on the device without requiring a subscription. This keeps your data private and avoids monthly fees. You can access recordings locally through the app. This is ideal for users who want cost control and privacy. Compare this with cloud-only storage options to see if local saving fits your budget and security preferences.
Physical Design and Build Specs
The eufy Video Smart Lock E40 measures 8.03 inches in height, 2.99 inches in length, and 1.27 inches in width. The listing describes the finish as black. These dimensions allow the unit to sit flush against most standard door frames. You can install it on single-cylinder deadbolts without drilling for most doors. The device is not compatible with round faceplates, non-standard plates, or mortise locks. This means you should verify your existing hardware before mounting.
According to the listing, the lock carries an IP65 waterproof rating. This specification indicates protection against dust and low-pressure water jets. The operating temperature range spans from -22°F to 158°F. You can place this device on exterior doors in various climates without worrying about extreme cold or heat damage. The compact form factor keeps the camera and lock mechanism close together. This layout ensures your face is captured clearly for recognition.
The unit combines a 2K HD camera, doorbell, and smart lock into one body. This all-in-one design reduces the number of separate devices you need to manage. You get a 135° head-to-toe view from the camera. This wide angle helps you see packages and visitors fully. The physical build supports local facial data storage for privacy. You do not need to worry about external servers holding your biometric information. The solid construction aims to provide reliable daily use.
Setup and Everyday Use Guide
Installation requires no drilling for most doors. You can install it on standard US and Canadian single-cylinder deadbolts. The unit is not compatible with round faceplates, non-standard faceplates, or mortise locks. It carries an IP65 waterproof rating, allowing operation in temperatures from -22°F to 158°F. This makes it suitable for outdoor exposure.
The device connects via Matter, enabling integration with Apple Home, Google Home, Alexa, and SmartThings. You can also use the eufy app for full features. Note that camera streams are not supported via Matter due to current limitations. For advanced AI security features, the lock integrates with the eufy Ecosystem and HomeBase 3.
Daily use relies on facial recognition for unlocking. The system stores all facial data locally, ensuring privacy. It adapts to everyday look changes across a wide range of users. The 60 GHz radar detects human motion while filtering out pets, small objects, and wind. This precision reduces false alerts and extends battery life.
Power comes from a 15,000mAh rechargeable lithium battery, offering up to six months of functionality. An 800mAh backup battery activates automatically when power is low. Footage is stored on built-in 32GB local storage. There is no monthly subscription fee. You retain control over your data without ongoing costs.
Before You Buy This Lock
You need an eufy HomeBase 3 to access advanced AI security features. The device supports Matter, but camera streams do not work via that protocol. You must use the eufy app for full functionality. Check your door type carefully. This lock fits standard US and Canadian single-cylinder deadbolts. It does not work with round faceplates, non-standard faceplates, or mortise locks. Ensure your door frame can accommodate the 8.03-inch height. You should verify the 135-degree field of view covers your entryway adequately. The local 32GB storage means no monthly fees, which sets it apart from subscription-based options. Consider if facial recognition suits your household. The radar reduces false alerts, but you still need to maintain the battery. The 15,000mAh unit lasts up to six months. Keep the backup battery charged. This lock integrates with Apple Home, Google Home, Alexa, and SmartThings. Verify your existing smart home setup aligns with these requirements before purchasing.
Check before you buy
- Confirm your door is a standard single-cylinder deadbolt.
- Check if you have a HomeBase 3 for AI features.
- Verify the 135-degree view covers your entryway.
- Ensure you can use the eufy app for camera streams.
- Check compatibility with your existing smart home ecosystem.
The product at a glance
eufy Video Smart Lock E40 Facial Recognition
Best for: Standard deadbolts needing local facial recognition
- 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
The eufy Security E40 combines a 2K HD camera, doorbell, and smart lock into one unit. It features 135° head-to-toe coverage and 60 GHz radar to reduce false alerts. Facial recognition unlocks the door, with all data stored locally on 32GB of built-in storage. A 15,000mAh battery offers up to six months of use. It supports Matter for integration with major smart home ecosystems.
Pros
- 2K HD camera with 135° field of view
- Facial recognition with local data storage
- 15,000mAh battery with 800mAh backup
- 32GB local storage, no monthly fee
- Matter support for smart home integration
Cons
- Camera streams not supported via Matter
- Not compatible with round or mortise locks
- Requires eufy app for full features
Good fit if
- You want facial recognition for keyless entry
- You prefer local storage without subscriptions
- You have a standard single-cylinder deadbolt
Skip if
- You need camera streaming via Matter
- You have a non-standard door lock
- You want round or mortise lock compatibility
Verdict: The eufy E40 Video Smart Lock fits homeowners who want local facial recognition and 2K video without monthly fees. It is ideal for standard deadbolts where app control is acceptable over Matter streaming.
Specifications side by side
| Spec | eufy Video Smart Lock E40 Facial Recognition |
|---|---|
| Video Resolution | 2K |
| Power Source | 15,000mAh battery, 800mAh backup |
| Field of View | 135° |
| Storage Type | 32GB local storage |
| Connectivity | Matter |
| Resolution | 2K |
| Color | Black |
| Application | Front Door |
| Dimensions | 2.99 × 1.27 × 8.03 inches |
| Model | T85M0 |
Frequently asked questions
Does the eufy E40 support Matter for video streaming?
No, camera streams do not work via the Matter protocol. You must use the eufy app for full functionality and video access. While the device supports Matter for other smart home integrations, live video requires the proprietary application. This ensures you retain access to all features without relying on third-party streaming standards.
What is the video resolution on the eufy E40?
The eufy E40 features a 2K HD camera. This resolution provides higher detail than standard 1080p models. You can clearly identify faces and package labels in footage. This clarity helps verify visitors or deliveries without needing to zoom in on the video feed for better visibility.
How wide is the field of view on the E40?
The device offers a 135-degree field of view. This wide angle allows you to monitor the entire front door area effectively. You can capture a broader perspective of visitors approaching your home. This helps in seeing packages or individuals standing to the side of the main entrance.
Can I install the E40 on a mortise lock?
No, the unit is not compatible with mortise locks. It is designed for standard US and Canadian single-cylinder deadbolts. You must check your door type carefully before purchasing. The installation is not suitable for round faceplates or non-standard faceplates either.
What are the physical dimensions of the eufy E40?
The lock measures 8.03 inches in height, 2.99 inches in length, and 1.27 inches in width. These dimensions allow the unit to sit flush against most standard door frames. The finish is described as black, providing a discreet appearance on your entryway.
Does the E40 require a monthly subscription for basic features?
No, the device does not require monthly fees for core functions. It is ideal for homeowners who want local facial recognition and video without recurring costs. Advanced AI security features may require an eufy HomeBase 3, but basic operation remains fee-free.