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eufy Security

eufy Security Smart Lock C30, Keyless Entry Door Lock, Built-in WiFi, Black

Based on 2,219 reviews
Condition: New
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$79.98
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Oct 28
Order within 12 hours and 43 minutes

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At a glance

Condition
New
Style
Contemporary
Color
Black
Model
T85D0
Dimensions
2.57 x 1.63 x 6.05 in
Weight
0.95 kg
Material
Metal
In the box
Deadbolt

Features 5

  • Built-in WiFi, No Hub Required: The eufy Security Smart Lock C30 is a keyless entry door lock with built-in Wi-Fi, so you get remote control from anywhere with no bridge or hub needed.
  • Easy 15-Minute DIY Installation: Fits most standard deadbolts with no drilling required. Powered by 4 AA batteries for up to 5 months, with a low battery indicator to keep you informed.
  • Weather-Resistant for Every Front Door: IP53 waterproof exterior assembly operates reliably from -22F to 158F, with BHMA Grade 3 certification for dependable home security.
  • Voice Control & Smart Home Ready: Unlock with your keypad, app, voice (Alexa or Google Assistant), or physical key, and pair it with your eufy doorbell for seamless keyless entry.

Description

Anker is a global leader in tech lifestyle, spanning charging, power, smart home, creative tools, and audio & video. As part of One Anker brand upgrade, eufy is now unified as Anker: same products, same quality. In the smart home, Anker eufy offers whole-home security, health-first deep cleaning, and trusted care for families. Our technology brings you expert protection and wellness for body and mind. Everything is built with care for you. Smart Lock C30 eufy FamiLock E40 eufy FamiLock S3 Max eufy FamiLock E34 Smart Lock C220 eufy Smart Lock C33 eufy Smart Lock E31 How many passcodes can the eufy Smart Lock C30 store? Up to 100 different passcodes. How long does the battery last from one charge? Roughly 5 months depending on usage (based on unlocking the door 20-30 times per day). You'll get a notification when the battery is low. If the battery dies, you can use physical keys to unlock it. Note: Batteries are not included. What temperatures can the Smart Lock C30 handle? The C30 Smart Lock (exterior lock) can handle temperatures within the range of -22℉ to 158℉ (-30℃ to 70℃). Is Smart Lock C30 compatible with Apple HomeKit, IFTTT, or Matter? It's not compatible with these services yet. It's currently compatible with eufy Video Doorbells and eufy Security Cameras. What's the requirement for installation? Please check the compatibility infographic above for specific requirements. The Smart Lock C30 does not fit the rounded latch hole. Please use provided eufy deadbolt to install for your optimal experience.

Specs 30

Brand eufy Security
Special Feature Auto-Lock
Lock Type Deadbolt, Keypad
Item dimensions L x W x H 2.57 x 1.63 x 6.05 inches
Material Metal
Brand Name eufy Security
Recommended Uses For Product Residential, keyless entry, smart home integration, frequent use, long-term reliability
Number of Pieces 1

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

Easy to install. Easy to use. Great for security.
Style: Contemporary Color: Nickel
If you're in the market for an extra-secure lock that you can open remotely, buy this one. Ease of setup: I have zero experience with home improvement type things - I’m normally a task-rabbit girlie. But I’m currently a bit poor, so had to suck it up and install it myself, and it truly was simple to do. If I can do it, any idiot can do it. Quality: It's good. I feel like you can't go wrong with a Eufy product. They may be a bit pricier than others, but they're always good quality. They look nice, feel nice, act nice, etc. Functionality: It works. One little plus is that it works even if the batteries are dead. I was out of town and needed someone to stop by my house. The app told me that the batteries had died and I was afraid the lock would stop working and they wouldn't be able to get in. I was pleasantly surprised that that was NOT the case! One (pretty obvious) thing to note: if you have a door that kind of sticks, make sure you shut it hard / all the way. This can't lock if the deadbolt isn’t lined up with the hole in the other side of the door. App: This can be controlled remotely from the app because the lock connects to wifi. I have another Eufy lock (one of the fancier ones with the fingerprint thing - which this one does NOT have) on my front door, and that one can only be unlocked with the app if you're close enough to it on bluetooth. Which is honestly so dumb, because if I was at home when I needed to open the door I'd just walk over and unlock it manually. This one however, is a major upgrade because I can unlock it from wherever I am! Game changing for if you need to let someone in while you're not home, but you don't want to give them your code. Just unlock it for them and then re-lock it when they leave! ... show more
Reviewed in the United States on December 16, 2025 by Jenna
Smart, Reliable, and Easy to Use
Style: Contemporary Color: Black
The eufy Security Smart Lock C30 is an excellent smart lock with great build quality and a modern design. Installation was straightforward, and the app setup was quick and easy. The keyless entry is very convenient, and the lock responds quickly and works reliably. I also like being able to control and monitor the lock from my phone, which adds extra convenience and peace of mind. Overall, this is a high-quality smart lock that performs exactly as expected. I’m very happy with my purchase and would definitely recommend it to anyone looking for a reliable keyless smart lock. ... show more
Reviewed in the United States on July 19, 2026 by Kingformynest
Terrible battery life
Style: Contemporary Color: Nickel
I installed these smart locks on the doors of several of my rental properties as the guests frequently complained about using the touch screen interface on my other Eufy smart locks. For a bare bones and extremely cheap smart lock, these are the absolute best smart locks I have ever used except that they require 4AA batteries and they chew up battery life incredibly quickly. I originally used Amazon branded batteries and they died within the first week of using the smart lock. I next tried Duracell Extreme batteries in one lock and Energizer's "longest lasting" batteries in another... Both experienced complete battery failure in under 6 weeks. The Duracell batteries were completely dead and the lock did not give a noticable warning (neither on the lock itself nor in the mobile app) to warn me of the imminent failure. The lock completely failed to operate even without the remote functions... Luckily I had the physical key in a lock box and I could enter the home through the garage as an other backup... If you purchase this lock, plan on changing batteries every 3-4 weeks, and please set up alternative ways of entering the home, especially for a rental property... At least the digital keypad Eufy locks allow for keypad operation even after the mobile/remote futures go off line. The digital face/keypad is extremely difficult to use, but the finger print reader works amazingly well as does the mobile/remote features.. With the digital Eufy lock, you get a rechargeable battery pack which gives off an extremely loud warning notice when the battery pack needs recharging, and which gives a great notice through the mobile app. With this lock chewing up batteries so quickly (without using a rechargeable battery pack) it is absolutely useless for my needs and I have already swapped these out for the older Kwikset smart locks without remote app ability as batteries last well over 12 months on those. I keep one entry way with a remote opening smart lock while keeping an older generation smart lock on the front door), as a means to ensure the best access for my tenants. I wanted to love this lock, but battery life is so bad, that I can't use it.. Everything else about the lock is absolutely amazing. ... show more
Reviewed in the United States on January 11, 2025 by William Holland
Great - but mounting was not seamless and adding users isn’t super intuitive.
Style: Contemporary Color: Nickel
First off this lock, especially for the price is awesome. I love that the exterior buttons are physical press vs digital. The locking mechanics feel smooth, and being able to do it from an app with a simple drag is just awesome. It was fairly easy to install, with some caveats. Everything went on easy besides the interior plate. For the life of me I could not get the included screws to thread into the mounting plate. I ended up having to use my old lock screws + one that came with the kit to screw into my door to hold it. This isn’t how it’s supposed to be, but it works. Second, adding users is kind of weird. I wanted my wife to have access to the app so I invited her via email as it prompts you too. Well it isn’t as easy as just sending an email for access like I’m use to with Amazon products. We had to get the email, make an account with that email, send the invite again now that the account was active, and then go to the Apps inbox to accept the invite. Just seemed like more steps than usual. Very minor flaws though and not enough to knock it down any stars. It’s awesome being able to set up multiple codes for parents, in-laws, whoever. It’s great to be able to unlock my house from my car and just walk right in. If you have a “dumb” lock, you’ll enjoy this upgrade. ... show more
Reviewed in the United States on November 4, 2025 by DTG21
A great look. Good app and Wi-Fi interaction. Bad battery life
Style: Contemporary Color: Black
Review Image by A. Osborn
I think it's an easy setup. Clean lines. They look good and the app works well. I have to give it a one-star ding because the battery life is pretty bad. It runs out very quickly and so you'll be changing batteries at least on a active house, probably once a month. Also the unlock mech takes some time to reel back the bolt. Would definitely buy again though for the price. ... show more
Reviewed in the United States on July 17, 2026 by A. Osborn
eufy C30 - Good lock at reasonable price; easy install; easy setup with APP
Style: Contemporary Color: Nickel
Review Image by ESAU IKARETH
Review Image by ESAU IKARETH
This eufy C30 lock was extremely easy to install and setup using the APP. It easily connected to BLUETOOTH and WiFi without fuss or problems. The Built-in WiFi is what prompted me to try this lock. It is very good. Anyone who is looking for a reasonably priced, no-gimmicks, easy to setup and use, keyless lock should consider this one - the eufy C30. The APP was very easy to setup, understand it's functions and to use it to provide multiple access codes. I also had extremely good experience with their Customer Support. I had to move my lock from a RIGHT opening door to a LEFT opening door. I contacted Customer Support to ask how to reset the lock for the change in LOCK DIRECTION. The support assistant was extremely courteous & knowledgeable; provided the FIX over the phone, as well as by email, with a problem ticket number, in case I needed a follow-up call. I had no trouble at all following their instructions and the LOCK (eufy C30) and it's APP are working perfectly in it's new location. This lock provides what I need, from an easy-to-use keyless device. It is now installed on the side door of my garage. ... show more
Reviewed in the United States on January 15, 2026 by ESAU IKARETH
Value for money, great product!
Style: Contemporary Color: Black
This is my third purchase, love these lock. They work well and are easy to install.
Reviewed in the United States on October 6, 2026 by Aa pictured, easy install. Elegant and affordable.
Easy set up for the girlies.
Style: Contemporary Color: Black
I had a pretty bad allergic reaction that made me stay in the hospital for a few hours and no one had the keys to my apartment to keep an eye on my dogs. Decided to get this just in case I had another incident of the sort. Ordered it from Amazon and it never arrived but I ended up getting it in person and it has been the best purchase I've ever made. The set up was easy, the lock functions well and it looks fancy. Only downside that it has is that it doesn't have battery included. However, I bought the rechargeable batteries and the battery last for almost 3 weeks. Im 27, live by myself, and I was able to install it without help. ... show more
Reviewed in the United States on August 28, 2025 by ✨️✨️✨️
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