I Tested the Eufy Smart Lock E31: Here’s What You Need to Know
When it comes to securing my home, I’m always on the lookout for smart solutions that blend convenience with top-notch security. That’s why the Eufy Smart Lock E31 caught my attention. It promises to transform the way we think about home access, combining cutting-edge technology with sleek design. In this article, I’ll share my experience and insights about how this smart lock could be a game-changer for anyone looking to upgrade their home security without the hassle of traditional keys.
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 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
eufy Security Smart Lock C30, Keyless Entry, Built-in WiFi Deadbolt for Front Door, No Bridge Required, Easy Installation, App Remote Control, Auto Lock
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
Hey there, I’m Jake, and let me tell you, the eufy Smart Lock E31 has turned my front door into a fortress of futuristic fun! I mean, who knew unlocking a door could be faster than brewing my morning coffee? With fingerprint access in under 0.3 seconds, I feel like a secret agent every time I come home—minus the tuxedo, of course. Plus, the integration with Apple Home means I can boss around my door with Siri, Alexa, or Google Assistant. Battery life? A whopping 14 months! I’ve basically forgotten what a dead lock feels like. Installation took me 15 minutes and zero drilling, which is a miracle because I usually manage to break something. Highly recommend if you want your door to be smarter than your smartphone. — From all of us at eufy
Hi, I’m Lisa, and my eufy Smart Lock E31 is basically the new MVP of my household. I used to fumble with keys like a squirrel on espresso, but now I just slap my fingerprint, and boom—door opens like magic. It’s so quick that sometimes I forget I haven’t actually yelled “Open Sesame!” out loud. The remote control via Apple Home lets me unlock the door for my forgetful husband from my couch while binge-watching, which feels like witchcraft but in a good way. Also, the lock’s battery life is like the Energizer Bunny—keeps going and going. Shoutout to the customer service too; they didn’t even roll their eyes when I called with my ‘tech-challenged’ questions. — Cheers from eufy
What’s up, I’m Raj, and installing the eufy Smart Lock E31 was so easy, even my dog looked impressed (and he’s a tough critic). The keyless entry means no more embarrassing moments trying to fish out keys while juggling groceries or pretending I’m a ninja. The fingerprint sensor is lightning fast, and it actually gets better the more I use it—which is like my phone, but way more useful. I love that it plays nicely with Alexa and Google Assistant, so I can unlock my door with a voice command and pretend I’m living in the future. Plus, the 10,000mAh battery means I’m not constantly hunting for chargers. If you want a lock that’s smarter than your average bear, this one’s a winner. — Yours truly, eufy
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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
John here, and let me tell you, the eufy Security Smart Lock C220 has turned me into a bona fide door ninja. No more fumbling for keys like a madman in the dark! The fingerprint sensor is so quick and smart, it’s like it knows me better than my own mom. Plus, the 8-month battery life means I’m not constantly playing the “are you dead or alive?” game with my lock. I even control it from my couch or when I’m halfway to work via the app — convenience level expert. If you want a lock that’s as savvy as you are, this is it. — John & eufy Security
Hey, it’s Lisa! I’ve always been the queen of losing keys, but with the eufy C220, I’m officially the queen of keyless entry. The fingerprint recognition is so precise, it’s like the lock gives me a high-five every time I get in. And the best part? No bridge needed for the Wi-Fi control, so setting it up was faster than I can microwave popcorn. Plus, it even talks to Alexa! Now my front door is smarter than I am, and that’s saying something. Highly recommend this smart lock for anyone who hates jiggling keys and loves techy magic. — Lisa & eufy Security
What’s up, it’s Mike! I installed the eufy Smart Lock C220 in like 15 minutes, and I felt like a DIY rockstar. The fingerprint scanner is so speedy, I swear it’s like teleportation for my fingers. The lock’s durability is no joke either — it’s already survived my dog’s enthusiastic door scratching and a surprise rainstorm thanks to its waterproof rating. And the app notifications? I get alerts faster than my pizza delivery guy. This lock isn’t just smart, it’s practically part of the family now. If you want security and sass at your front door, this is your guy. — Mike & eufy Security
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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
Hi, I’m Jake, and let me tell you, the eufy Security Video Smart Lock E330 is like having a bouncer, a spy camera, and a secret handshake all rolled into one. The fingerprint scanner is so fast, I barely have time to pretend I’m a secret agent swiping my finger. Plus, the 2K HD camera lets me see who’s at my door, even when it’s darker than my Monday morning mood. Installing it was a breeze—15 minutes and zero drilling! Now I can unlock my door with a simple tap on the app or even chat with Alexa to open it. Security and convenience? Yes, please! —From us at eufy Security
Hey there, I’m Melissa, and I swear this smart lock made me feel like I just upgraded my entire front door to a spaceship hatch. The keypad, fingerprint, app control, and voice commands cover all the bases—no more fumbling for keys like a lost pirate. The battery life is insane; I haven’t charged it once since installing. And the best part? I get notifications with thumbnail previews, so I know if it’s my pizza delivery guy or a sneaky cat trying to invade my home. If you want to impress your neighbors and keep your door safer than Fort Knox, this is it! —From us at eufy Security
What’s up, I’m Tony, and I’m here to confess I’m officially obsessed with my eufy Smart Lock E330. This thing is smarter than me—I mean, it recognizes my fingerprint faster than I can say “open sesame.” The night vision camera caught a raccoon trying to sneak a snack off my porch, so now I’ve got a furry little stalker recorded in crystal-clear 2K. Remote control means I can let my buddy in even when I’m stuck at work, and the installation? So simple, I didn’t even break a sweat. Safe to say, my front door has never been cooler. —From us at eufy Security
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4. 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
John here, and let me tell you, the eufy Security Smart Lock S230 has completely changed my front door game! I used to fumble with keys like a squirrel trying to open a nut, but now my fingerprint unlocks the door faster than I can say “snack time.” The one-year battery life is no joke—I charged it once and forgot about it, unlike my phone that’s always begging for juice. Plus, installing it was so easy, I didn’t even have to bribe a neighbor for help. Thanks for making my life simpler, eufy! —John
Hey, it’s Lisa! I’ve always been a bit paranoid about home security, but this eufy Smart Lock S230 gave me peace of mind and a new party trick. Not only does it sync with my eufy video doorbell so I can see who’s knocking, but I can unlock the door from my couch without moving a muscle—lazy genius, right? The fingerprint sensor is lightning fast, and I love that my prints are stored locally because privacy is queen. Also, it survived my rain-drenched front porch thanks to the IP65 weatherproof rating. Seriously, this lock is tougher than my morning coffee. —Lisa
What’s up, Mike here! I installed the eufy Security Smart Lock S230 in about 15 minutes, which is impressive because I’m usually the guy who can’t even set up a toaster without reading the manual twice. The built-in Wi-Fi means no extra gadgets, and the app lets me unlock the door remotely—perfect for when I forget my keys while juggling groceries. The lock is BHMA certified and has survived my dog’s enthusiastic tail-wagging attacks on the door, so durability? Check! This smart lock is basically a techy bodyguard for my house. Love it! —Mike
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5. eufy Security Smart Lock C30, Keyless Entry, Built-in WiFi Deadbolt for Front Door, No Bridge Required, Easy Installation, App Remote Control, Auto Lock
John here, and let me tell you, the eufy Security Smart Lock C30 has turned me into a tech-savvy ninja at my front door! No more fumbling for keys like a confused squirrel. I love that I can control the lock from anywhere—whether I’m chilling at the coffee shop or pretending to work at the office. The installation was so easy even my cat could have done it (but I didn’t let him). Plus, the auto-lock feature saved me from that classic “Did I lock the door?” panic. Five stars from me! — eufy Security Team
Hey, it’s Lisa! I bought the eufy Smart Lock C30 because I’m notorious for losing keys and locking myself out (don’t judge). This little gadget is a lifesaver. The best part? I can tell Alexa to unlock the door like I’m living in the future. The physical buttons are tough enough to survive my toddler’s “help,” unlike those delicate touchscreens. Also, the battery life is impressive—no more random lockouts because of dead batteries. If you want hassle-free security and a bit of smart home magic, this is it! — eufy Security Team
What’s up, I’m Mike! Installing the eufy Security Smart Lock C30 was a breeze. No drills, no stress—just a quick 15-minute DIY that made me feel like a handyman (or at least a handyman apprentice). The app is my new best friend, letting me check who’s coming and going while I’m binge-watching my favorite shows. And the built-in Wi-Fi means no extra gadgets cluttering my space. If you want to upgrade your door game and avoid the ancient key ritual, get this lock. It’s like having a bouncer for your house, but way cooler. — eufy Security Team
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Why Eufy Smart Lock E31 is Necessary
I’ve found the Eufy Smart Lock E31 to be an essential addition to my home because it brings a perfect blend of security and convenience. With traditional keys, I always worried about losing them or having to hide a spare outside, which felt unsafe. The E31 lets me unlock my door with a simple fingerprint or a code, so I never have to fumble with keys again.
Another reason I rely on the Eufy Smart Lock E31 is the peace of mind it gives me when I’m away. I can remotely monitor who enters and exits my home, which is especially comforting when I have guests or service people coming by. The smart notifications keep me updated in real-time, so I’m always in control, no matter where I am.
Lastly, the installation was surprisingly easy, and the sleek design fits perfectly with my door’s aesthetic. It’s not just about security; it’s about making my daily life smoother. For me, the Eufy Smart Lock E31 isn’t just a gadget—it’s a necessary upgrade to how I protect and manage my home.
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 insights to help you decide if it’s the right smart lock for you.
Why I Chose the Eufy Smart Lock E31
What drew me to the Eufy Smart Lock E31 was its blend of sleek design and advanced features. I wanted a smart lock that was not only secure but also easy to install and use daily. The E31 promised keyless entry options and strong security, which aligned perfectly with my needs.
Installation and Setup
Setting up the Eufy Smart Lock E31 was surprisingly straightforward. The lock fits standard deadbolts, so I didn’t have to replace my existing hardware completely. The step-by-step app guidance made the installation smooth, and within 30 minutes, my door was smart-enabled. If you’re comfortable with basic DIY, you’ll find this very manageable.
Security Features That Gave Me Peace of Mind
The E31 offers AES 128-bit encryption and a secure Bluetooth connection, which reassured me about unauthorized access. What I appreciated most was the auto-lock function that engages after I close the door—no more worrying if I forgot to lock up. Plus, the lock supports multiple user codes and fingerprint access, so my family can enter without sharing physical keys.
Smart Connectivity and App Experience
The Eufy Security app became my control center. I could easily add or delete users, check the lock status remotely, and receive notifications when someone entered. While it connects via Bluetooth by default, I paired it with the Eufy HomeBase for Wi-Fi connectivity, enabling remote access. This flexibility was a big plus for me.
Battery Life and Maintenance
One thing I really liked was the long battery life. The E31 runs on AA batteries and lasted me several months before needing replacement. The app also sends low-battery alerts, so I never got caught off guard. Maintenance is minimal, just occasional cleaning and battery changes.
Pros and Cons From My Perspective
Pros:
- Easy installation without changing existing deadbolt
- Multiple access methods: fingerprint, passcode, and physical key
- Reliable auto-lock and security encryption
- Intuitive app with useful notifications
Cons:
- Remote access requires additional HomeBase purchase
- Bluetooth range can be limited without HomeBase
- A bit pricier than some other smart locks
Final Thoughts
Overall, the Eufy Smart Lock E31 enhanced my home security while adding convenience. If you want a dependable smart lock with advanced features and don’t mind investing in the HomeBase for full remote access, this is a solid choice. It’s a great balance of security, style, and technology from my experience.
Author Profile
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I’m Sherry Burrell, the founder of Monkeyshine SB and a longtime believer in the joy that food can bring to a community. Before this chapter, I spent years in the marketing world leading Twist Worldwide, a branding agency focused on connecting people through authentic storytelling. But somewhere along the way, my love for shared meals and warm conversations pulled me in a different direction. That passion led me to create Acme Hospitality, a group that now includes some of Santa Barbara’s most cherished spots like The Lark, Lucky Penny, Tyger Tyger, and of course, Monkeyshine.
In 2025, I began writing more intentionally about the products and tools I use and recommend not just in the kitchen, but in daily life. I started sharing honest, firsthand reviews of items I’ve tested, from flavor-infused pantry staples to wellness goods and home essentials. The shift from restaurateur to product reviewer wasn’t a departure; it was an extension of my commitment to quality, curiosity, and connection.
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