






🔐 Unlock the future of home security—smart, sleek, and always connected.
The eufy Security Smart Lock C34 is a Wi-Fi enabled keyless deadbolt designed for front or back doors, integrating seamlessly with Apple Home, Alexa, Google Home, and SmartThings without requiring a hub. It offers versatile unlocking methods including app, keypad, physical key, and voice commands, powered by 8 AA batteries delivering up to 8 months of battery life. Installation is quick and drill-free, compatible with standard doors in the US and Canada. The lock supports Matter protocol for future-proof smart home compatibility and comes with extensive warranty coverage and 24/7 customer support.





































| Brand | eufy Security |
| Item dimensions L x W x H | 6.89 x 2.76 x 1.3 inches |
| Lock Type | Deadbolt |
| Material | Steel or brass alloy |
| Recommended Uses For Product | Residential, for front doors or back doors |
| Special Feature | Auto-Lock |
J**B
Works well, attractive
Straightforward Instalation instructions. Previous Kwikset Halo about 4 years old, and never been able to update firmware. Batteries required changing about every two months. Never again. Eufy E31 has a specific dead bolt configuration so necessary to remove previous bolt mechanism. All installation a breeze. Recognized WiFi network quickly and logged in seamlessly. Added to Alexa devices and can now voice control with code request. So far perfect replacement. Supplied rechargeable battery module pack with emergency USB power. A different excellent experience. I’ve been battling quick set and happy this lock is performing as it should. Competitive pricing a real plus.
E**A
Great lock for the price
Installation is very easy, it takes no more than 15 minutes if the door has the correct hole size. Quality is very good, it looks very good installed on the door. Not so bulky. Functionality is great, unfortunately it can't be connected with Home Assistant. Configuring finger prints is very straight forward and the touch pad works super fast.
D**L
Great smart lock
I have been using smart locks for years, and this is my third. The Eufy replaced an August lock, so that will be the direct comparison. The August just replaced the inside portion, so reused the deadbolt mechanism. This Eufy replaces the entire unit, which has both advantages and disadvantages. If you're a renter, or want/need to maintain the existing key, leaving the existing deadbolt is preferred. However, replacing the entire mechanism, like the Eufy does, allows for more features, like the included keypad and fingerprint reader. For the August, the keypad was an add on. The Eufy also included wifi built-in, where with the August it was a separate component that was plugged in near the lock. While that requires more batteries for the Eufy, I prefer the all-in-one solution. The other advantage of the Eufy replacing the entire mechanism is how much more positive and direct the lock feels when locking/unlocking it manually. The August would sometimes get out of sync, and when turning the lock knob by hand, it would engage the motor and you would be turning that, too. The motorized locking is also more precise, and quieter, on the Eufy. The last advantage is really only for those already using Eufy. Having it integrated with the camera app is great. If you have a camera at the entry, you can locl/unlock the door from the same screen as viewing the camera. The fingerprint scanner works great, and is faster and easier than using a code. The one complaint I have is in the app. If you add codes for people like pet sitters, cleaning people, etc., you are limited in terms of how you allow them to use the lock. It's either always or scheduled. And you can't change that without removing the code and adding it back. You also can turn a code on and off. You have to remove it and add it. That's annoying and an inexcusable oversight. Hopefully that will be addressed at some point, but I don't have high hopes.
R**T
Great smart lock.
OK, I really like this smart lock. Physical installation was mechanical plug and play... took 5 minutes, literally... swapping from my old Quikset Kevo 1st gen dead bolt, which just ate batteries and worked maybe 10% of the time. Good riddance to that. The logial part of the installation was also very easy and fast. Keypad and fingerprint reader work perfectly and I had no issues with wifi, the Eufy app, or intergration with Matter partners Alexa and Apple Home (more on Apple Home later). Alexa voice control works great, however did lose its connection once where commands failed and Alexa said "there is something wrong with the Front Door (my name for the device). I had Alexa re-poll all my devices and it is back, and so far so good. I don't know if this was a one time thing or something that might become a problem. As for Apple Home, connecting the E31 to that was also simple and the Home app and Siri both controlled the lock perfectly. But as soon as the phones' screen goes off, Apple Home and Siri no longer work the next time. I get "command sent" then command failed messages and then that the device needs to have connection an Apple Home edge router or device like a HomePod, which I don't have. I may get a Mini just so I can use Siri for this lock since it is way more convenient than Alexa that needs a voice security code to unlock. The other negative is that I had all my exterior doors on one key and now I need to carry another one for this. But I knew that going in. I wish every lock maker would license QuikSet's anykey technology which makes re-keying dead simple and quick. Oh, well. The other potentially great thing about this lock is the large rechargeable battery. This looks to be a game changer, even if it gets only about half of the advertised life. No more tossing dozens of AA batteries into the trash or recycling. And hopefully much more life than the 6 weeks I used to get on the batteries for my Kevo POS. I would probably ahve given it 5 stars instead of 4 except this is day one and I have no idea how reliable this thing will prove to be or how the battery performs in the real world. Time will tell.
S**S
Exactly What You Want It to Be
That fingerprint reader? It’s instant. The Matter compatibility? Make sure you’re the sole device owner/admin, and it works perfect. Excellent smart lock.
V**O
Battery drains within 2 months and they dont Honor full warranty. Stay AWAY
I've been using the Eufy Security Smart Lock E30 for 5 months. I bought 2 of them they work pretty good. However the battery life is really bad with the original Eufy AA batteries both locks last only 2 months. Then I tried energizer AA and it last 1.5 months. I tried rechargeable AA batteries and still 1.5 months. I contacted Eufy and they had me run some troubleshooting but still the same. After all they said that is a quality issue on the product and that they will process a refund but they said they will process only a 70% refund because is pass 90 days. The description shows 18months worry free warranty, that is false advertisement and 36months mechanical problems warranty, also not real. DON'T buy this lock unless you want to purchase 8 AA batteries every 2 months. They DON'T honor the warranty even know they know is a quality issue on the product they sell. Also Fingerprint doesn't work really good which I was okay with that but the battery drain it is a problem. I bought this because it is a trusted brand and I have many of their products but If you have problems they do not honor the full warranty. I will stay away now on.
T**O
Quality lock, easy to install, great app
I purchase 3 of these for my home. The first one was fairly easy to install after watching the instruction video. Once I did one, the other two were very easy. I made sure the rechargeable batteries were at 100% before I installed them, so I will see how long they last. They are well built. I chose this brand after checking Consumer Reports. The fingerprint reader was straightforward to configure and the access code was easy to set. I like these because it also has a traditional key as a backup. The app is well organized and intuitive.
D**A
Best the wyze lock by a mile
Just installed this and so far so good. I had a wyze lock and it would ALWAYS jam up. No matter how much I messed with it. And it would wine and squeel to close and kill the batteries in a few days this one fit perfect. Build quality is nice but much more plastic than the all metal wyze lock but for my use case it works very very well so far. Matter set up was also very easy. Eufy app select matter then go to whatever app you have for your smart come and connect. 30 second set up in Google home app for native use right in the app and with Gemini. For the price this is a hard simple but useful lock to beat
Trustpilot
2 weeks ago
4 days ago