eufy Smart Lock E31, Fingerprint Keyless Entry Door Lock with Apple Home Ecosystem, for Front Door or Back, Supports Matter, Apple Home, Alexa, Google, 10000mAh Battery, Auto Lock
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AI Verdict
This is a Wi-Fi-enabled smart deadbolt with fingerprint, keypad, app, and voice control, best for Apple Home users who need a 10,000mAh rechargeable battery.
This lock is a situational fit because its broad smart home compatibility and 10,000mAh battery are compelling features, but the reported inconsistency of the fingerprint scanner and Apple Home integration issues mean it won't be a seamless experience for everyone. If those core features work, it’s a strong contender; if not, it's a frustration.
If fingerprint reliability is critical, look for models with higher biometric accuracy ratings or consider a lock with a more robust physical keypad and app control.
Regret Score™
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Issues discovered after purchase
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Amazon rating vs actual quality
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Pros
- Offers five unlocking methods: fingerprint, app, keypad, physical key, and voice commands via Siri, Alexa, or Google Assistant.
- Features a 10,000mAh rechargeable battery providing up to 14 months of use, with low battery alerts at 20% and a month of power-save mode.
- Supports Matter for broad integration with Apple Home, Google Home, Alexa, and SmartThings.
- Installs in approximately 15 minutes without requiring drilling.
- Includes a micro-USB port for emergency power if the battery fully drains.
- Provides 18 months of electronic protection and 36 months of mechanical coverage.
Cons
- Fingerprint scanner reliability is inconsistent, with some users reporting it works only 10% of the time.
- Some users experience issues with Apple Home integration, where the device fails to connect to the app.
- The lock mechanism can jam, requiring a replacement unit for some users.
- Notifications within the Eufy app can include marketing messages, which some users find intrusive.
Dimension Scores
The fingerprint scanner is reported by some users to work only 'maybe 10% of the time,' making its accuracy highly inconsistent.
It features both Wi-Fi and Bluetooth, allowing remote control from virtually anywhere and local control, though Apple Home integration can be problematic for some.
The lock supports Matter for broad integration with major smart home ecosystems like Apple Home, Google Home, and Alexa, but some users experience issues with Apple Home connectivity.
Constructed from metal and plastic, it comes with an 18-month electronic and 36-month mechanical warranty, suggesting a reasonable build quality.
Best For
- Households needing multiple keyless entry options, including biometric and voice control.
- Users prioritizing long battery life in a smart lock, with up to 14 months on a single charge.
- Smart home setups already using Apple Home, Google Home, or Alexa, due to Matter support.
Not Recommended For
- Users who rely solely on fingerprint access for quick entry due to reported inconsistency.
- Anyone unwilling to troubleshoot potential smart home integration issues, particularly with Apple Home.
Watch Out For
- The fingerprint scanner can be highly unreliable, with one user reporting it only works "maybe 10% of the time" even after assigning multiple fingers.
- Some units arrive defective or develop issues where the lock jams, preventing unlocking via app, fingerprint, or keypad.
- Apple Home integration can be problematic, with users unable to connect the E31 to their Apple Home app despite the lock functioning otherwise.
- Lock events and auto-lock features have been reported to stop working for some users, diminishing convenience and security.
Full Specifications
| UPC | 194644227340 |
| ASIN | B0DP4T27BL |
| Size | 7.7 inches x 8.1 inches x 4.4 inches |
| Brand | eufy Security |
| Color | Black |
| Style | Matter + WiFi + Fingerprint + 10000mAh battery |
| Material | Metal, Plastic |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Lock Type | Biometric, Deadbolt, Keypad |
| Model Name | T85F0J11 |
| Item Weight | 2.92 pounds |
| Part Number | T85F0 |
| Manufacturer | Anker |
| Control Method | App, Touch, Voice |
| Controller Type | Apple HomeKit |
| Special Feature | Auto-Lock, Matter |
| Number of Pieces | 1 |
| Special Features | Auto-Lock, Matter |
| Battery Cell Type | Lithium Ion |
| Item model number | T85F0 |
| Product Dimensions | 8.1 x 7.7 x 4.4 inches |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Included Components | Lock |
| Connectivity Protocol | Wi-Fi |
| Item Package Quantity | 1 |
| Item dimensions L x W x H | 8.1 x 7.7 x 4.4 inches |
| Recommended Uses For Product | Residential Doors |
What Buyers Say
The most surprising finding is the wide disparity in user experience regarding the fingerprint scanner; some find it lightning-fast, while others report it's nearly useless, working only 10% of the time. This inconsistency extends to Apple Home integration, where some users have seamless setup and others can't connect at all. The 10,000mAh battery and multiple unlock methods are frequently praised, but the core biometric feature's unreliability is a significant recurring detail.
“Honestly, the fingerprint thing is a total crapshoot, sometimes it's instant, other times I'm just standing there punching in the code like a caveman, but the battery lasts forever so that's something.”
Common Praise
- The 10,000mAh rechargeable battery offers up to 14 months of power.
- Installation is straightforward and takes around 15 minutes without drilling.
- Multiple unlocking options, including app, keypad, and voice, provide convenience.
- The lock supports Matter, enabling integration with various smart home platforms.
- Emergency micro-USB port allows temporary power for unlocking if the battery dies.
Common Complaints
- Fingerprint scanner frequently fails to recognize prints, working as little as 10% of the time.
- The lock mechanism can jam, preventing electronic or biometric unlocking.
- Difficulty connecting the lock to Apple Home, despite advertised compatibility.
- Auto-lock and other event-based functions sometimes stop working.
- Eufy app sends marketing messages alongside important notifications.
Ownership Tips
- The fingerprint scanner's performance doesn't seem to improve significantly over time, even with repeated use.
- If the lock jams, a full replacement might be necessary, indicating a hardware issue rather than a software glitch.
- Despite Matter support, Apple Home integration can be a persistent headache for some, requiring more troubleshooting than expected.
- The emergency micro-USB port is a lifesaver, but remember it's only for temporary power, not a full charge.
Frequently Asked Questions
How many ways can I unlock the eufy Smart Lock E31?
You can unlock it in five ways: using your fingerprint, the Eufy app, the keypad, a physical key, or voice commands via Siri, Alexa, or Google Assistant.
What is the battery life of the E31 smart lock?
The 10,000mAh rechargeable battery can last up to 14 months based on an average of 10 unlocks per day. You'll get low battery alerts at 20% charge, and it has a power-save mode for an additional month.
Is the eufy Smart Lock E31 compatible with Apple Home?
Yes, it supports Matter and is designed for integration with Apple Home, Google Home, Alexa, and SmartThings. However, some users have reported difficulties connecting it to Apple Home.
What happens if the battery dies completely?
If the battery dies, you can use a portable charger to provide emergency power via the micro-USB port on the exterior to unlock the door. This port is for emergency power only, not for charging the battery or data transfer.
Is installation difficult for the E31 smart lock?
Installation is designed to be easy and takes about 15 minutes, typically without requiring any drilling.
Buying Guide
When looking at smart locks, you need to think about how you actually want to get into your house. Do you want to use your finger, a code, your phone, or just yell at Alexa? This Eufy lock gives you a bunch of options, but you need to know that not all of them work perfectly for everyone. Also, consider how it talks to your other smart stuff – 'Matter' support is a big deal because it means it should play nice with most systems, but 'should' is the keyword.
10,000mAh Battery
This is a huge battery for a smart lock, meaning you won't be swapping out AAs every few months. Think of it like your phone's battery lasting over a year on a single charge – super convenient.
Matter Support
Matter is like a universal translator for smart home devices. If your lock has it, it means it can talk to Apple Home, Google Home, Alexa, and SmartThings without needing a bunch of separate apps or hubs, making your smart home less of a headache.
Biometric (Fingerprint) Unlock
This lets you open your door with just a touch, which is super fast and convenient if you're carrying groceries. But, if the sensor isn't accurate, it's just a fancy button that doesn't work, forcing you to use a code or key.
Alternatives
If fingerprint reliability is your top priority, search for smart locks with higher reported biometric accuracy and faster, more consistent recognition. If seamless Apple Home integration is non-negotiable, look for models with specific, verified user success stories for HomeKit connectivity.
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