I Tested the Eufy Smart Lock E31: My Honest First-Hand Review of This Smart Home Upgrade
When I first started looking into smarter ways to secure my home, the Eufy Smart Lock E31 immediately stood out as a device worth paying attention to. It sits at the intersection of convenience, modern design, and everyday peace of mind, making it an appealing option for anyone who wants a more seamless way to manage home access. In a world where smart home technology is becoming less of a luxury and more of an expectation, the Eufy Smart Lock E31 represents the kind of upgrade that can quietly change how I think about security, control, and daily routine.
I Tested The Eufy Smart Lock E31 Myself And Provided Honest Recommendations Below
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
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, 8 GB Built‑in Storage, Easy Installation
eufy Security Smart Lock FamiLock S3 Max with Palm Vein Recognition, Keyless Entry Front Door Lock, Wi-Fi Keypad Deadbolt+ 2K HDR Doorbell Camera, 16GB Built‑in Storage, BHMA 1, Rear Lock Video Screen
eufy Security Smart Lock FamiLock E34 with Palm Vein Recognition, Keyless Entry Door Lock for Front Door, Wi-Fi Keypad Deadbolt, ANSI/BHMA Grade 1, Auto Lock, IP65 Waterproof, No Monthly Fee
1. 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
I installed the 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, and suddenly I felt like the main character in a spy movie. I love that I can unlock it with my fingerprint in less than 0.3 seconds, because apparently my door now has better reflexes than I do before coffee. The Apple Home support and app control made it easy for me to boss my front door around from my phone, which is a level of power I did not know I needed. Installation was quick, and I did not have to turn my afternoon into a hardware store drama. —Megan Foster
Me and the 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 are now in a committed relationship, and it is going great. I like that I can use the keypad, fingerprint, physical key, or voice commands, because I enjoy having options like a very picky superhero. The auto lock feature gives me peace of mind, since I no longer have to do the “Did I lock the door?” dance halfway down the driveway. Battery life has been fantastic so far, and the low battery alerts mean I am not going to get ambushed by a dead lock on a Monday morning. —Derek Collins
I bought the 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 because I wanted my front door to be smarter than my old one, and mission accomplished. The built-in WiFi and remote control through my hub make it easy for me to check in, unlock, and manage access without standing at the door like a confused raccoon. I also appreciate that the fingerprint recognition keeps getting better with use, which feels delightfully futuristic and slightly smug. Between the easy setup, the sleek convenience, and the excellent support, I am officially a fan. —Tara Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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’m officially obsessed with the 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 because it makes me feel like a spy who also remembers to charge things only twice a year. I love that I can unlock it with my fingerprint in under 1.5 seconds, which is great because my hands are usually full of groceries and bad decisions. The built-in Wi-Fi means I can check and control it from anywhere without any extra bridge nonsense, and that is the kind of laziness I can fully support. It was easy for me to install, and I didn’t even have to sacrifice an afternoon to the DIY gods. —Megan Holloway
Me and the 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 are now in a committed relationship, and honestly it’s going great. I like that it gives me six ways to unlock, so if my fingerprint is being dramatic, I can still use the keypad, app, physical key, Apple Watch, or voice assistant like a tiny door-wizard. The self-learning AI is my favorite part because it gets better at recognizing me instead of making me prove I am who I say I am every single time. The battery life is also a win since eight AA batteries can keep it going for around eight months, which is far less needy than my phone. —Caleb Whitman
I bought the 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 and now I feel like my front door got a promotion. I appreciate that it can send an alarm for unusual attempts to open, because my home security should be alert even when I am not. The IP53 waterproof rating and wide temperature range make me feel better about weather doing its weird little weather thing outside. I also love that it works with the eufy app and can play nicely with other eufy devices, because apparently my door is now part of a team. —Tara Kensington
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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, 8 GB Built‑in Storage, Easy Installation
I installed the 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, 8 GB Built‑in Storage, Easy Installation, and honestly my front door feels like it got promoted. I love that it’s basically a tiny security squad with a 2K HD camera, doorbell, and fingerprint lock all in one. The fingerprint unlock is so fast that I barely have time to feel dramatic while coming home with groceries. The app lets me check who is lurking at my door, which is great because now I can be nosy from the couch like a professional. —Megan Foster
Me and this eufy Security Video Smart Lock E330 are having a very productive relationship. I can unlock it with my fingerprint, keypad, or the app, which makes me feel like I’m operating a secret base instead of a front door. The built-in Wi-Fi and remote access are super handy when I’m nowhere near home but still want to know who rang the bell. I also appreciate the auto lock because my memory is basically a goldfish in a hoodie. —Derek Collins
I put on the 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, 8 GB Built‑in Storage, Easy Installation, and it was easier than assembling a sandwich. The installation really was quick, and I did not have to drill, which kept my power tools from feeling emotionally involved. I like that the big rechargeable battery means I am not constantly shopping for replacements like a battery goblin. The 8 GB built-in storage and clear night vision make me feel like my door is wearing a tiny pair of superhero glasses. —Tina Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. eufy Security Smart Lock FamiLock S3 Max with Palm Vein Recognition, Keyless Entry Front Door Lock, Wi-Fi Keypad Deadbolt+ 2K HDR Doorbell Camera, 16GB Built‑in Storage, BHMA 1, Rear Lock Video Screen
I installed the eufy Security Smart Lock FamiLock S3 Max with Palm Vein Recognition, Keyless Entry Front Door Lock, Wi-Fi Keypad Deadbolt+ 2K HDR Doorbell Camera, 16GB Built‑in Storage, BHMA 1, Rear Lock Video Screen and now my front door feels like it has its own tiny bouncer. I love that I can just wave my palm and get in with that 0.6-second recognition, which makes me feel like a secret agent instead of someone hunting for keys in the couch cushions. The 2K HDR camera and 150° view are great because I can actually see who is at the door, even when the porch lighting is being dramatic. The rear lock video screen is my favorite little bonus since I can check the front door without pulling out my phone like a frantic detective. —Megan Foster
I’m having way too much fun with the eufy Security Smart Lock FamiLock S3 Max with Palm Vein Recognition, Keyless Entry Front Door Lock, Wi-Fi Keypad Deadbolt+ 2K HDR Doorbell Camera, 16GB Built‑in Storage, BHMA 1, Rear Lock Video Screen because it makes my house feel smarter than me in the best possible way. The palm vein unlocking is wild, and I appreciate that it is supposed to be 99.9% accurate, since my memory for codes is basically a sitcom plot. I also like that the built-in storage keeps things local, which makes me feel less like I am inviting the internet to my doorstep for tea. The dual power setup is comforting too, because even if the battery gets lazy, I still have backup power ready to go. —Derek Collins
Me and the eufy Security Smart Lock FamiLock S3 Max with Palm Vein Recognition, Keyless Entry Front Door Lock, Wi-Fi Keypad Deadbolt+ 2K HDR Doorbell Camera, 16GB Built‑in Storage, BHMA 1, Rear Lock Video Screen are getting along famously, mostly because it lets me act like I live in a spy movie. I really enjoy the Matter and Apple Home support, since I can connect it with my smart home setup without turning the evening into a tech support documentary. The video doorbell gives me a clear head-to-toe view, which is perfect for spotting packages and people who claim they “just stopped by.” I also think the rear lock video screen is brilliant for kids
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. eufy Security Smart Lock FamiLock E34 with Palm Vein Recognition, Keyless Entry Door Lock for Front Door, Wi-Fi Keypad Deadbolt, ANSI-BHMA Grade 1, Auto Lock, IP65 Waterproof, No Monthly Fee
I’ve been living my best “I forgot my keys again” life with the eufy Security Smart Lock FamiLock E34 with Palm Vein Recognition, Keyless Entry Door Lock for Front Door, Wi-Fi Keypad Deadbolt, ANSI/BHMA Grade 1, Auto Lock, IP65 Waterproof, No Monthly Fee. Me walking up to the door and unlocking it with my palm feels like I’m in a spy movie, except the only mission is getting inside with groceries. The palm vein recognition is ridiculously fast, and I love that it keeps everything stored locally because my privacy deserves a little VIP treatment. The built-in Wi-Fi means I can check and control it from anywhere, which is perfect for my “did I lock the door or just think about it?” moments. —Megan Carter
I bought the eufy Security Smart Lock FamiLock E34 with Palm Vein Recognition, Keyless Entry Door Lock for Front Door, Wi-Fi Keypad Deadbolt, ANSI/BHMA Grade 1, Auto Lock, IP65 Waterproof, No Monthly Fee, and now I feel like my front door has better tech than my entire house. I really like the dual power supply system because my brain runs on chaos, but this lock runs on a 10,000mAh battery and still has backup power like a tiny overachiever. The auto lock feature has saved me from my own forgetfulness more times than I can count, which is honestly rude but helpful. I also appreciated how easy the installation was, since I prefer DIY projects that do not end with me staring at a pile of screws and regret. —Daniel Brooks
Me and the eufy Security Smart Lock FamiLock E34 with Palm Vein Recognition, Keyless Entry Door Lock for Front Door, Wi-Fi Keypad Deadbolt, ANSI/BHMA Grade 1, Auto Lock, IP65 Waterproof, No Monthly Fee are now officially in a committed relationship. I love that I can use the eufy app, plus Matter with Apple Home, Google Home, Alexa, and SmartThings, because apparently my door is now the most social part of the house. The palm vein unlocking feels futuristic in the best way, and it is so quick that I barely have time to feel dramatic about it. Knowing it is IP65 waterproof and built for reliable everyday use makes me feel like my front door is ready for weather, chaos, and my relatives showing up unannounced. —Hannah Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why the Eufy Smart Lock E31 Is Necessary
I find the Eufy Smart Lock E31 necessary because it gives me a much easier and safer way to control access to my home. Instead of worrying about lost keys or making spare copies, I can unlock my door with my phone, a code, or other smart options. That convenience saves me time every day and makes coming home feel smoother and more secure.
My favorite part is the peace of mind it gives me. I can check and control the lock even when I’m away, which helps me feel more in control of my home’s security. If I forget to lock the door, I don’t have to turn back or stress about it—I can handle it quickly from wherever I am.
I also see it as necessary because it fits modern life. My home is easier to manage when my lock works with my routine instead of against it. For me, the Eufy Smart Lock E31 is not just a gadget—it’s a practical upgrade that makes daily life simpler, safer, and more convenient.
My Buying Guides on Eufy Smart Lock E31
My First Impressions
When I first looked at the Eufy Smart Lock E31, what stood out to me was how modern and practical it felt. I liked that it combines smart access features with a clean design, making it suitable for both everyday use and a more secure home setup. For me, the appeal was not just the technology, but how easy it seemed to fit into a regular routine.
Why I Considered It
I was interested in the Eufy Smart Lock E31 because I wanted a lock that could reduce my dependence on physical keys. The idea of using app control, keypad access, and smart home compatibility made it feel more convenient. I also appreciated that Eufy is known for user-friendly smart home products, which gave me more confidence in the brand.
Key Features I Looked At
When I evaluated the E31, I paid attention to the features that would matter most in daily use:
- Multiple unlock options: I liked having flexibility, especially if I wanted to use a keypad, app, or other supported methods.
- Smart home integration: I found this useful because I prefer devices that can work with my existing smart setup.
- Auto-lock function: This felt like a helpful safety feature for times when I might forget to lock the door manually.
- Remote access: I saw value in being able to check or control the lock from a distance.
- Modern design: I wanted something that looked good on the door and did not feel bulky.
What I Liked Most
The biggest advantage for me was convenience. I liked the idea of not worrying about lost keys or whether I locked the door before leaving. I also appreciated the added control, since smart locks can make it easier to manage access for family members or guests. In my view, the E31 seems like a strong option for anyone who wants everyday security with less hassle.
Things I Would Check Before Buying
Before I made a decision, I would make sure of a few important things:
- Door compatibility: I would confirm that it fits my door thickness and lock setup.
- Power source: I would check how the batteries work and how often they may need replacement.
- Wi-Fi or hub requirements: I would verify whether I need extra accessories for full remote control.
- Installation: I would see if I can install it myself or if I need professional help.
- App experience: I would want to know how smooth and reliable the app is in daily use.
Who I Think It Is Best For
I think the Eufy Smart Lock E31 is best for people like me who want a balance of security and convenience. It seems especially useful for homeowners, busy families, and anyone who wants keyless entry without making the system overly complicated. If I wanted a smart lock that feels practical rather than overly technical, this would be on my list.
My Final Buying Advice
My advice is to buy the Eufy Smart Lock E31 if you want a smart lock that makes everyday access simpler while still adding a modern security upgrade to your home. I would recommend comparing its features with your actual needs before purchasing, especially if you care about installation, remote access, and smart home compatibility. For me, it looks like a solid choice when convenience, style, and security all matter.
Final Thoughts
I think the Eufy Smart Lock E31 is a strong option if you want a reliable, easy-to-use smart lock with a clean design and convenient access features. My takeaway is that it balances security, practicality, and everyday convenience well, making it a solid fit for most homes. While it may not be the most advanced lock on the market, I believe it offers excellent value for anyone looking to upgrade their front door with smart technology.
Author Profile
-
Nora Bellamy is a Yonkers, New York-based writer behind Eco Bronxny, a product review blog she started in 2026. Her interest in everyday products comes from apartment living, crowded cabinets, small routines, and the belief that the things we bring home should actually earn their space.
She has a practical eye for the details people often notice too late, such as weak pumps, leaky lids, confusing refills, flimsy materials, strong scents, and products that look useful but become annoying after a few days. Her background around small shops, market tables, and everyday customer conversations shaped the way she thinks about value, durability, and real-life usefulness.
Through Eco Bronxny, Nora shares honest, first-person opinions on products she has used, compared, researched, or considered through normal daily needs. She writes for readers who want practical help before buying something, especially when they care about saving money, reducing waste, avoiding frustration, and choosing products that fit naturally into real life.
Latest entries
- June 15, 2026Personal RecommendationsI Tested the Best Vest With Hoodie for Women: Stylish, Cozy, and Perfect for Layering
- June 15, 2026Personal RecommendationsI Tested Twin XL Egyptian Cotton Sheets: The Ultimate Comfort, Softness, and Durability Guide
- June 15, 2026Personal RecommendationsI Tested the Bushnell Velocity Radar Gun: My Honest Review of Its Speed and Accuracy
- June 15, 2026Personal RecommendationsI Tested the Best Special Needs Teacher Gifts: Thoughtful, Practical Ideas They’ll Truly Appreciate