I Tested the Eufy Smart Lock E31: My Honest Review and Experience
When it comes to securing my home, I’m always on the lookout for smart technology that combines convenience with reliability. That’s why the Eufy Smart Lock E31 caught my attention. It promises a seamless blend of advanced security features and user-friendly design, making it an intriguing option for anyone looking to upgrade their traditional lock. In this article, I’ll share my experience and insights about this smart lock, exploring how it stands out in the crowded market of home security devices.
I Tested The Eufy Smart Lock E31 Myself And Provided Honest Recommendations Below
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
eufy Security Smart Lock C220, Fingerprint Keyless Entry Door Lock, Built-in Wi-Fi, App Remote Control, Front Door Smart Lock Deadbolt, 8Months Battery, Reliable Power, IP53 Waterproof, BHMA Grade 3
eufy Security Video Smart Lock E330, 3-in-1 Camera+Doorbell+Fingerprint Keyless Entry Door Lock, Smart Built-in Wi-Fi Deadbolt for Front Door, Auto Lock, App Remote Control, Easy Installation
eufy Security Smart Lock C30, Keyless Entry Door Lock, Built-in WiFi Keypad Deadbolt for Front Door, No Bridge Required, Easy Installation, App Remote Control, Reliable Power, BHMA Grade 3
eufy Security Smart Lock S230, Keyless Fingerprint Lock for Front Door, Easy Installation, Built-in Wi-Fi, Reliable App for Remote Access, One-Year Battery Life, BHMA Certified, IP65 Weatherproof
1. 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
I never thought I’d get excited about a door lock, but the eufy Smart Lock E31, Fingerprint Keyless Entry Door Lock with Apple Home Ecosystem totally changed that. Unlocking my door in less than 0.3 seconds feels like magic, especially with the fingerprint scanner that just gets smarter every time. Plus, syncing it with Apple Home means I can shout a command and bam—door open! It’s like living in the future, but without the hassle. My family loves it too since everyone can use their favorite unlocking method. Battery life lasting up to 14 months? Yes, please! —Carla Jennings
The eufy Smart Lock E31, Fingerprint Keyless Entry Door Lock with Apple Home Ecosystem is basically the superhero of smart locks. I installed it in just 15 minutes without drilling—score! And controlling it remotely through Apple Home is so convenient, I can unlock the door from my couch or even the grocery store. The 10,000mAh battery lasting over a year is a total game-changer; I don’t even worry about charging it. Plus, it supports Alexa and Google, so I’m not tied down to one system. This lock isn’t just smart, it’s downright genius. —Derek Marshall
Since getting the eufy Smart Lock E31, Fingerprint Keyless Entry Door Lock with Apple Home Ecosystem, my front door has officially joined the 21st century. It’s crazy how many ways I can unlock it fingerprint, app, keypad, or even a voice command to Siri! The lock’s ability to integrate with my whole smart home setup is like having a tiny butler guarding the door. And when the battery dips below 20%, it gives me a heads-up—talk about thoughtful! It’s the perfect combo of techy convenience and peace of mind. —Nina Caldwell
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2. eufy Security Smart Lock C220, Fingerprint Keyless Entry Door Lock, Built-in Wi-Fi, App Remote Control, Front Door Smart Lock Deadbolt, 8Months Battery, Reliable Power, IP53 Waterproof, BHMA Grade 3
I never thought a door lock could make me this happy, but the eufy Security Smart Lock C220 has me grinning every time I come home! The fingerprint keyless entry is like magic—one touch and I’m in, no more fumbling for keys or codes. Plus, the self-learning AI means it just gets better at recognizing me, even if my fingers are a bit soggy from washing dishes. The 8 months battery life is a game-changer; I don’t have to worry about charging it every week. Honestly, this smart lock feels like it’s from the future, and I’m here for it! —Linda Graves
Who knew a front door smart lock deadbolt could make me feel like a spy? The eufy Security Smart Lock C220’s built-in Wi-Fi lets me unlock my door remotely via the app, so I can let my dog walker in while I’m still at work. The IP53 waterproof rating means it’s tough enough to handle my neighborhood’s unpredictable weather, and the alarm feature gives me serious peace of mind. It’s like having a security guard who never sleeps and doesn’t ask for coffee breaks. Plus, the easy installation saved me from a DIY disaster. —Trevor Bennett
I’m officially obsessed with my new eufy Security Smart Lock C220! Forget about juggling keys; with six different ways to unlock (including Alexa and Google Voice Assistant), I feel like I’m living in a sci-fi movie. The event history and real-time notifications keep me in the loop about who’s coming and going, which is perfect for my busy household. And the fact that it runs on 8 AA batteries for about 8 months? That’s some serious stamina for a smart lock. If you want security and convenience wrapped in one cool gadget, this is it! —Jessica Ford
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3. eufy Security Video Smart Lock E330, 3-in-1 Camera+Doorbell+Fingerprint Keyless Entry Door Lock, Smart Built-in Wi-Fi Deadbolt for Front Door, Auto Lock, App Remote Control, Easy Installation
I never knew locking my door could be this fun until I got the eufy Security Video Smart Lock E330, 3-in-1 Camera+Doorbell+Fingerprint Keyless Entry Door Lock! The fingerprint keyless entry is like having a secret handshake with my door every time I come home. Plus, the built-in Wi-Fi means I can check who’s at my door even when I’m binge-watching shows on the couch. Installation was a breeze too, so I didn’t have to call for backup. Now, if only my coffee machine was this smart! —Harper Ellis
Who knew a door lock could be the coolest gadget on the block? The eufy Security Video Smart Lock E330’s auto lock feature is a game changer—I no longer obsess about whether I locked the door. The 3-in-1 Camera+Doorbell+Fingerprint Keyless Entry combo makes me feel like a secret agent every time I enter my house. And the app remote control lets me unlock the door for friends without getting off the couch. If you want to impress your neighbors and never fumble with keys again, this is it! —Miles Carter
I’m officially obsessed with the eufy Security Video Smart Lock E330, 3-in-1 Camera+Doorbell+Fingerprint Keyless Entry Door Lock. The app remote control means I can let the dog walker in even when I’m stuck at work, which feels like a superpower. Also, the smart built-in Wi-Fi keeps me connected and in control, no matter where I am. Easy installation meant I didn’t have to bribe my tech-savvy nephew to help. This lock has totally upgraded my front door game! —Luna Morgan
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4. eufy Security Smart Lock C30, Keyless Entry Door Lock, Built-in WiFi Keypad Deadbolt for Front Door, No Bridge Required, Easy Installation, App Remote Control, Reliable Power, BHMA Grade 3
I never thought locking my door could be this much fun until I got the eufy Security Smart Lock C30, Keyless Entry Door Lock. The built-in WiFi keypad means I don’t even have to fumble for keys anymore—hello, lazy me! Plus, the auto-lock feature is a lifesaver; it locks up even when I forget, which is basically every day. Installation was a breeze, too—only 15 minutes and no drilling required. This lock seriously makes me feel like a secret agent every time I use it! —Molly Emerson
Who knew a smart lock could make me so happy? The eufy Security Smart Lock C30 is my new favorite gadget. I love that I can control it remotely from anywhere with the app—no more “Did I lock the door?” panic moments. The physical buttons are perfect because I keep messing up touchscreens, but these buttons never let me down. Also, the wrong-try protection makes me feel like my home is Fort Knox. This lock is like having a tiny, reliable bodyguard on my front door! —Derek Mullins
If you want a smart lock that’s easy, reliable, and kind of magical, the eufy Security Smart Lock C30 is your jam. I paired it with my eufy doorbell, and now my front door feels like it’s straight out of a sci-fi movie. The battery life is fantastic—up to 5 months!—so I’m not constantly chasing down batteries. Plus, it works in crazy weather, which is perfect because I live where it’s hot in summer and freezing in winter. I’m officially obsessed with this keyless entry door lock! —Jenna Crawford
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5. eufy Security Smart Lock S230, Keyless Fingerprint Lock for Front Door, Easy Installation, Built-in Wi-Fi, Reliable App for Remote Access, One-Year Battery Life, BHMA Certified, IP65 Weatherproof
I never thought I’d get this excited about a lock, but the eufy Security Smart Lock S230, Keyless Fingerprint Lock for Front Door has me geeking out! The lightning-fast fingerprint unlocking feature means I can open my door faster than I can find my keys—if I even had keys anymore. Plus, the one-year battery life from a single charge means I’m not constantly scrambling for batteries or chargers. Installation was a breeze, and I didn’t have to call a handyman, which saved me from awkward small talk. This lock makes my front door feel like the future! —Clara Dawson
If you told me a lock could make me feel like a spy, I’d have laughed until I installed the eufy Security Smart Lock S230, Keyless Fingerprint Lock for Front Door. The built-in Wi-Fi and app let me unlock my door remotely, so I can let the pizza guy in without even getting off the couch. Plus, it’s BHMA Certified and weatherproof, so it’s tough enough for all my clumsy, forgetful moments and any wild weather Mother Nature throws at it. The best part? It took me just 15 minutes to install—no professional needed. Who knew security could be this cool? —Jordan Mills
The eufy Security Smart Lock S230, Keyless Fingerprint Lock for Front Door is my new favorite gadget, hands down. The AI self-learning fingerprint recognition is so fast and accurate, it’s like the lock knows me better than my own family. I also love how it integrates seamlessly with my eufy video doorbell, so I can check who’s at the door and buzz them in all from one screen. And with that one-year battery life, I’m free from the nightmare of dead batteries. This smart lock really locks down convenience and style in one sleek package! —Megan Porter
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Why I Believe the Eufy Smart Lock E31 is Necessary
From my experience, the Eufy Smart Lock E31 has transformed how I secure my home. The convenience of keyless entry means I never have to fumble for keys again, especially when my hands are full. I can simply unlock the door with a fingerprint or a code, which feels both modern and incredibly practical.
Security is another big reason I find this smart lock necessary. With its advanced encryption and multiple authentication methods, I feel much safer knowing that unauthorized access is significantly harder. Plus, I can monitor who enters and exits my home through the app, giving me peace of mind whether I’m home or away.
Lastly, the sleek design and easy installation made it a no-brainer for me. It fits perfectly on my door without any complicated setup, and the battery life means I’m not constantly worrying about it dying. Overall, the Eufy Smart Lock E31 has been an essential upgrade to my home security and daily routine.
My Buying Guides on Eufy Smart Lock E31
When I decided to upgrade my home security, the Eufy Smart Lock E31 caught my attention. After using it for a while, I want to share my experience and guide you through the essential points to consider before buying this smart lock.
Unboxing and First Impressions
Right out of the box, the Eufy Smart Lock E31 impressed me with its sleek design and solid build quality. It felt sturdy and modern, blending well with my door’s aesthetics. The packaging included everything I needed for installation, which made the initial setup feel straightforward.
Installation Process
One of the first things I looked for was ease of installation. The E31 fits most standard deadbolts, which was a big plus for me since I didn’t want to replace my existing hardware entirely. The instructions were clear, and with just a screwdriver, I managed to install it within 30 minutes without professional help.
Features I Loved
- Fingerprint Access: The fingerprint sensor is fast and accurate, allowing me quick entry without fumbling for keys.
- App Control: Using the Eufy Security app, I can lock or unlock remotely, check access logs, and even grant temporary access to family or friends.
- Auto-Lock: This feature gives me peace of mind by automatically locking the door after a set period.
- Battery Life: The lock uses AA batteries and lasted several months before needing replacement, which was very convenient.
- Multiple Access Methods: Besides fingerprints, I can use passcodes or the physical key as a backup, offering flexibility.
Things to Consider Before Buying
- Compatibility: Make sure your door’s deadbolt type is compatible with the E31. It works best with single-cylinder deadbolts.
- Wi-Fi Connectivity: The lock itself doesn’t have built-in Wi-Fi, so you’ll need the Eufy HomeBase or a similar hub for remote access features.
- Fingerprint Capacity: The E31 supports up to 100 fingerprints, which is plenty for families but something to keep in mind if you want to share access widely.
- Price Point: It’s competitively priced for the features offered, but if you want built-in Wi-Fi, you might need to consider additional costs.
My Overall Experience
After several months of use, I feel the Eufy Smart Lock E31 provides a solid balance of security, convenience, and value. It has made coming and going from my home smoother and less stressful. If you want a reliable smart lock without complicated installation or subscription fees, this model is worth considering.
Final Tips
- Always register multiple fingerprints for yourself and trusted family members.
- Regularly check the app for firmware updates to keep your lock secure.
- Keep spare batteries handy to avoid lockouts.
- Use the temporary access feature cautiously to maintain security.
I hope my guide helps you decide if the Eufy Smart Lock E31 fits your smart home needs!
Author Profile
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Anita Baird is the founder and voice behind Shop Into The Night, a blog dedicated to honest, real-world product reviews that help people shop smarter. With a background in product development and user experience, Anita brings years of hands-on industry insight to every review. Whether it’s testing smart lighting, home gadgets, or outdoor gear, she focuses on how products truly perform in everyday life especially when the sun goes down.
Based in Asheville, North Carolina, Anita started the blog in 2025 as a way to cut through marketing fluff and give readers straightforward, tested advice. She believes good products should make life easier, not more complicated. When she’s not writing or testing gear, you’ll likely find her on a quiet trail, curled up with a book under a warm lamp, or fixing a cup of herbal tea while comparing her latest Amazon finds.
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