eufy Security Smart Lock E31, Fingerprint Keyless Entry Door Lock for Front Door
Quick take
The eufy Security Smart Lock E31 is a Wi‑Fi enabled deadbolt built for everyday access, using fingerprint unlock plus a keypad, with app control and voice control options. It supports Matter and works with Apple Home, Alexa, and Google, and it’s designed to run on rechargeable 10,000mAh batteries for months at a time. The biggest thing to plan for is smart-home integration behavior, especially Apple Home reliability when phone connectivity changes, plus confirming your door compatibility before swapping hardware.
Pros and cons
Pros
- Fast, multi-method unlocking: fingerprint, keypad, app control, physical key, and voice support.
- Built-in Wi‑Fi deadbolt with remote control, access management, notifications, and event logs.
- Battery-powered with low-battery alerts, plus an emergency power option for when the battery runs out.
- Auto-lock support for added security in daily use.
Cons
- Integration can be setup-sensitive (notably Apple Home behavior when the phone screen turns off).
- Door fit may require extra parts or adjustment if you are replacing a different deadbolt format.
- Smart features like Home Assistant connectivity may not work as expected for all setups.
What buyers think
Buyer feedback is largely positive around installation speed and day-to-day usability. Many report the lock feels sturdy, operates smoothly, and is quiet during normal use. Setup is commonly described as straightforward for Wi‑Fi connection, with fingerprint and keypad performance noted as quick and responsive. Where opinions diverge is smart-home reliability and compatibility details, with limited but meaningful reports of intermittent connection behavior in voice control and specific Apple Home control limitations related to when the phone is actively connected. Overall, the review evidence points to strong practical performance for unlocking and convenience features, with smart integration being the main area to verify for your specific home setup.
What this smart lock does well
Multiple ways to unlock, without committing to just one
The E31 is built around convenience for the whole household. You can unlock via fingerprint (fast entry), the keypad, the app, or voice assistants, with a physical key option available as a fallback.
Built-in Wi‑Fi for remote control and activity awareness
Because it has built-in Wi‑Fi, you can manage the lock through the app and handle remote unlocking when you need to. Buyers also mention useful admin-style features such as access management, real-time notifications, and an event log.
Battery life designed for long stretches
With rechargeable 10,000mAh batteries, the lock is designed to go for months between charges (the estimate is up to about 14 months based on average usage). It also includes low-battery alerts at around 20%, plus an emergency power approach using a portable USB power source if the battery dies.
Pros and cons for the real buyer
Best for
- Households that want fingerprint-first entry but still want keypad and app options.
- People who prefer a Wi‑Fi smart lock (no separate hub requirement for connectivity management).
- Buyers who want auto-lock behavior for everyday routines.
- Smart-home users invested in Apple Home, Alexa, or Google (and who want Matter support).
Who should avoid it or double-check first
- Anyone relying on Home Assistant or other non-standard smart-home setups, since some buyers report connectivity limitations.
- People replacing an older deadbolt who are unsure about compatibility, since a different deadbolt configuration can require hardware changes or extensions.
- Buyers who expect Apple Home control to behave identically in every phone state, since some integration behavior may depend on having an appropriate “home hub” device in place.
Installation and setup considerations
Installation is positioned as quick (buyers often describe it as plug-and-play or about 15 minutes when the door is already correctly prepared). If your door has an existing smart deadbolt or a different deadbolt configuration, you may need to remove the previous internal mechanism and confirm the deadbolt tailpiece or other fitment details.
After mounting, Wi‑Fi pairing and registering the lock with your smart home is typically straightforward. For Apple Home specifically, plan your setup around your home hub devices, especially if you notice Apple Home controls failing when your phone screen is off.
Battery and emergency power, explained for day-to-day use
The lock uses a rechargeable battery pack, with guidance that the emergency USB power method is for power during outages, not for charging the battery itself. If you want fewer interruptions, treat the low-battery alert seriously and recharge before it drops to zero.
Verdict: is the eufy Security Smart Lock E31 worth it?
The eufy Security Smart Lock E31 is a strong fit if you want a fingerprint-enabled Wi‑Fi deadbolt with keypad backup, app control, and broad smart-home support including Matter. It tends to earn trust for easy installation and smooth everyday performance. The main reason to pause is integration setup sensitivity, especially for Apple Home behavior across phone states, plus making sure the lock is compatible with your existing door configuration.
If your priorities are fingerprint + fast access, remote app control, and Matter-ready smart-home compatibility, this is worth serious consideration. If you rely heavily on Home Assistant or you cannot verify door compatibility, compare alternatives in the deadbolt category that better match your ecosystem and hardware situation.
FAQ
Does the eufy security smart lock E31 work with matter?
Yes. It is designed to support Matter, along with smart-home ecosystems like Apple Home, Alexa, and Google.
How do you unlock the E31?
You can unlock using the fingerprint reader, the keypad, the app, and voice assistants (plus a physical key option as a backup).
How long does the battery last?
With the included rechargeable 10,000mAh batteries, it’s designed to last up to about 14 months under average usage. It also provides low-battery alerts around 20% remaining.
What happens if the battery dies?
The lock includes an emergency power method using portable USB power so you can unlock when the battery is depleted. This is intended for emergency power, not charging the battery.
Is it difficult to install?
Many buyers describe installation as quick, especially if your door is properly prepared for the deadbolt. If you are replacing a different lock type, you may need to ensure the internal deadbolt configuration and any required tailpiece fit.
Will it connect reliably with Apple Home?
Some buyers report Apple Home works well during active sessions, but control reliability can depend on having appropriate home hub devices. If Apple Home commands fail when the phone screen is off, that typically indicates you should review your Apple Home hub setup.
Does it work with Home Assistant?
Some users report that Home Assistant connectivity may not work as expected. If Home Assistant is essential to your setup, it’s worth confirming compatibility before purchase.
Questions people also ask
What type of door is this smart lock for?
It’s designed for residential front doors with a compatible deadbolt mounting setup.
Does the lock have auto-lock?
Yes. Auto-lock timing is supported to help secure the door automatically after closing.
Does it include an event log?
Yes. The app experience includes activity/event logging and notifications.
Specifications
| Product Title | eufy Security Smart Lock E31, Fingerprint Keyless Entry Door Lock for Front Door, Built-in WiFi Deadbolt, App Control, Supports Matter, Apple Home, Alexa, Google, 10000mAh Battery, Auto Lock |
|---|---|
| Category | Tools & Home Improvement > Hardware > Door Hardware & Locks > Deadbolts |
| Brand | eufy Security |
| Manufacturer | Anker |
| Model Name | T85F0J11 |
| Model Number | T85F0 |
| Color | Black |
| Material | Metal, Plastic |
| Brand Name | eufy Security |
| Recommended Uses For Product | Residential Doors |
| Number of Pieces | 1 |
| Included Components | Lock |
| UPC | 194644227340 |
| Unit Count | 1.0 Count |
| Manufacturer Part Number | T85F0 |
| Additional Features | Auto-Lock, Matter |
| Lock Type | Biometric, Deadbolt, Keypad |
| Controller Type | Apple HomeKit |
| Control Method | App, Touch, Voice |
| Connectivity Protocol | Wi-Fi |
| Smart Home Compatibility | Smart Home Compatible |
| Style Name | Matter + WiFi + Fingerprint + 10000mAh battery |
| Material Type | Metal, Plastic |
| Item Dimensions | 8.1 x 7.7 x 4.4 inches |
| Special Feature | Auto-Lock, Matter |
| Item dimensions L x W x H | 8.1 x 7.7 x 4.4 inches |
Available variants
Style
- Matter + WiFi + Fingerprint + 10000mAh battery
- Matter + WiFi + Fingerprint + 8 AA batteries
Recommended next
Schlage Encode Smart Wi‑Fi Deadbolt Lock with Touchscreen Keypad, Keyless Front Door Entry, App Control (BE489WB CEN 622)
The Schlage Encode is a Wi‑Fi-enabled smart deadbolt that adds keyless entry with a fingerprint-resistant touchscreen keypad and remote access through the Schlage Home app. It supports up to 100 access codes, optional auto-lock, and voice control via Alexa/Google Home, plus a built-in alarm and a physical backup key. The main caveats to consider are Wi‑Fi band compatibility (2.4GHz only) and real-world setup fit for existing door hardware.
ULTRALOQ Bolt SE Smart Lock, Built-in Wi-Fi, Matter Over Thread
The ULTRALOQ Bolt SE combines fingerprint access, passcodes, keypad control, and remote app unlocking, with smart home support for Apple Home, Alexa, and Google Assistant. It uses Matter over Thread plus built-in Wi-Fi, aiming to reduce compatibility hassles and extend battery life with a low-energy mesh. The main tradeoff to consider is reliability tied to setup and connectivity, especially if you expect every unlock to be instantaneous with minimal app involvement.
Schlage Encode Plus Smart Wi-Fi Lock for Front Door, Keyless review
The Schlage Encode Plus is a keyless smart deadbolt with built-in Wi‑Fi, touchscreen entry, app remote access, and Apple HomeKit (plus Alexa/Google Assistant support). It’s designed for quick DIY install and supports scheduled access codes, notifications, and lock history. The biggest buying caveat is that some advanced HomeKit behaviors (like geofencing) may require extra setup, and battery performance can vary by usage.
Sifely Fingerprint Smart Door Lock with Handle & Keypad
The Sifely fingerprint smart deadbolt is built for keyless entry with multiple unlock options (fingerprint, keypad, app, fob, and key). It also supports app-based access management for temporary guest codes, making it a practical pick for families and Airbnb-style rentals, with one main caveat: many smart-home and remote features rely on the optional Wi‑Fi gateway.