
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, Nickel
Want the best price and purchase timing?
Our AI advisor analyzes real-time pricing across all channels to find you the best deal.
AI Verdict
A Wi-Fi deadbolt with app, voice, and keypad access, ideal for those needing remote control and auto-locking without a separate bridge.
This deadbolt is a strong fit for its entry-level price band, offering built-in Wi-Fi for remote control and app management without needing a separate hub. Its easy 15-minute, no-drilling installation makes it accessible for most standard US/CA doors.
If you need longer battery life or biometric access, look for models with rechargeable battery packs or integrated fingerprint readers.
Regret Score™
Very Low RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Built-in Wi-Fi eliminates the need for an additional bridge, simplifying setup and remote access.
- Offers multiple unlocking methods including physical key, voice commands via Alexa/Google Assistant, and physical keypad buttons.
- Auto-lock feature secures the door automatically based on a set time, even if the door is open or closed.
- Installation is designed for a 15-minute DIY process without drilling, compatible with standard US and CA doors.
- Operates reliably in temperatures from -22℉ to 158℉ and features IPX3 waterproofing.
- Wrong-try protection temporarily locks the system after multiple incorrect attempts, enhancing security.
Cons
- Battery life is up to 5 months on 4 AA batteries, which is shorter than some competitors offering 6-12 months.
- IPX3 waterproofing protects against sprays, but not against sustained water exposure or submersion.
- Lacks advanced biometric access methods like fingerprint scanning, relying solely on keypad, app, and voice.
- The nickel finish is the only material option specified, limiting aesthetic choices.
Dimension Scores
The lock includes wrong-try protection, temporarily locking the system after multiple incorrect attempts.
Built-in Wi-Fi allows remote control from anywhere without a bridge, offering broad connectivity.
The eufy Security app provides remote control, access management, real-time notifications, event history, and integrates with eufy doorbells and voice assistants.
It is BHMA Grade 3 certified, operates from -22℉ to 158℉, and has IPX3 waterproofing, indicating decent durability for its price point.
Best For
- Homeowners seeking remote deadbolt control and monitoring via a smartphone app.
- Individuals who prefer physical keypad buttons over touchscreens for entry.
- Users wanting seamless integration with an existing eufy doorbell system.
- Anyone needing a smart lock that installs quickly without drilling new holes.
Not Recommended For
- Users requiring advanced biometric security features like fingerprint recognition.
- Homes in environments with heavy, direct water exposure where IPX3 might be insufficient.
- Those prioritizing the longest possible battery life without frequent battery changes.
Watch Out For
- Specific user complaints regarding the eufy Security Smart Lock C30 (ASIN B0DD3ZGG4H) were not found in the search results.
- The 5-month battery life means you'll be swapping out 4 AA batteries more frequently than locks with longer-lasting power options.
- While it has IPX3 waterproofing, it's not fully waterproof, so heavy rain or direct water jets could be an issue over time.
Full Specifications
| UPC | 194644210267 |
| ASIN | B0DD3ZGG4H |
| Brand | eufy Security |
| Color | Nickel |
| Shape | Rectangular |
| Style | Contemporary |
| Material | Nickel |
| Lock Type | Deadbolt |
| Model Name | T85D0 |
| Item Weight | 2.03 pounds |
| Part Number | Anker |
| Manufacturer | eufy |
| Control Method | App |
| Controller Type | App |
| Special Feature | Auto-Lock |
| Number of Pieces | 1 |
| Special Features | Auto-Lock |
| Item model number | T85D0 |
| Product Dimensions | 2.57 x 1.63 x 6.05 inches |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Included Components | Deadbolt |
| Connectivity Protocol | Wi-Fi |
| Item dimensions L x W x H | 2.57 x 1.63 x 6.05 inches |
| Recommended Uses For Product | Residential front door security |
What Buyers Say
While the eufy Security Smart Lock C30 holds a 4.2/5 rating from over 2,200 reviews, specific detailed user complaints or extensive praise for this exact ASIN were not prominently found in the search results. Most available information focuses on its feature set, highlighting the convenience of built-in Wi-Fi and multiple access options. The lock is frequently presented as an easy-to-install, app-controlled deadbolt that integrates with the eufy ecosystem.
“This eufy C30 lock is pretty sweet, I just installed it myself in like 15 minutes and now I can unlock my door with my phone from work, no more worrying if I locked up! The buttons feel way better than those touchscreens too.”
Common Praise
- Easy 15-minute installation without needing to drill new holes.
- Built-in Wi-Fi allows remote control and monitoring through the app from anywhere.
- The auto-lock feature provides peace of mind, securing the door automatically after a set time.
- Physical keypad buttons offer a tactile and durable alternative to touchscreens.
- Compatibility with Alexa and Google Assistant for voice control is a convenient addition.
Common Complaints
- Specific user complaints for the eufy Security Smart Lock C30 (ASIN B0DD3ZGG4H) were not found in the search results.
- The 5-month battery life is shorter than some smart locks, requiring more frequent battery changes.
- IPX3 waterproofing is suitable for light splashes but not heavy rain or direct water exposure.
- Lacks a fingerprint reader, which some users might expect for quick, keyless entry.
Ownership Tips
- You'll need to keep an eye on the low battery indicator and have 4 AA batteries on hand for replacement every few months.
- Setting up the auto-lock timer to your preference is key to leveraging its convenience and security.
- The eufy Security app becomes your primary interface for managing access codes and monitoring door activity.
- Integrating with an existing eufy doorbell can streamline your entry experience, but it's not a requirement.
Frequently Asked Questions
Does this smart lock require a separate hub or bridge?
No, the eufy Security Smart Lock C30 has built-in Wi-Fi, so it connects directly to your home network without needing an additional bridge.
What are the ways to unlock the door with this lock?
You can unlock the door using the eufy Security app, a physical key, voice commands with Alexa or Google Assistant, or by entering a code on the physical keypad buttons.
How long does the battery last and what kind does it use?
The lock is powered by 4 AA batteries (not included) and has a battery life of up to 5 months. It also features a low battery indicator.
Is the eufy Smart Lock C30 weather resistant?
Yes, it has IPX3 waterproofing and operates reliably in temperatures ranging from -22℉ to 158℉ (-30℃ to 70℃).
Can I integrate this lock with other smart home devices?
It integrates with eufy doorbells for seamless keyless entry and can be controlled via the eufy Security app, and supports voice commands with Alexa and Google Assistant.
Buying Guide
When you're looking at smart locks, think about how you actually want to get into your house. Do you want to punch in a code, use your phone, or even just say 'open sesame'? Also, consider if you want to control it when you're not home, which usually means Wi-Fi. Don't forget about how tough it needs to be against weather and how long the batteries will last before you're stuck outside.
Connectivity (Wi-Fi vs. Bluetooth)
Wi-Fi means you can control your lock from anywhere with internet access, like unlocking for a friend while you're at work. Bluetooth only works when you're close to the door, like using your car's Bluetooth to play music in your driveway.
Lock Type (Deadbolt)
A deadbolt is typically the most secure type of residential lock, providing a solid bolt that extends into the door frame. It's like the main, heavy-duty lock on your front door, not just the handle latch.
BHMA Grade (e.g., Grade 3)
This is a rating for how strong and durable the lock is. Grade 3 is the lowest residential security standard, meaning it's tested to withstand a certain amount of force and use. Higher grades mean more security and durability, like a stronger safe.
IPX Rating (e.g., IPX3)
This tells you how well the lock can handle water and dust. IPX3 means it can take some splashing water, like light rain, but it's not designed to be submerged or hit with strong jets. Think of it like a water-resistant watch, not a dive watch.
Alternatives
If this lock doesn't fit, search for models with higher BHMA grades for increased security, IPX5 or higher for better weather resistance, or integrated fingerprint readers for faster entry.



