eufy Security or Aqara? Smart Locks Compared in 2026
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When comparing eufy security vs aqara deadbolt options, you face a choice between convenience and ecosystem depth. Both locks offer fingerprint entry and app control for keyless access. They also carry BHMA security certifications for durability. The main difference lies in their connectivity and power. One uses built-in Wi-Fi with replaceable batteries. The other relies on Thread technology with a rechargeable cell. Your existing smart home setup will likely dictate the better fit.
Key differences
| Aspect | eufy Security C220 Wi-Fi Fingerprint Smart Lock | Aqara U400 UWB Smart Deadbolt |
|---|---|---|
| Connectivity | Built-in Wi-Fi | Thread |
| Power Source | 8 AA batteries | Rechargeable lithium battery |
| Unique Access Method | Apple Watch swipe | UWB hands-free unlock |
| Water Resistance | IP53 | IP65 |
Which one should you choose?
Choose eufy Security C220 Wi-Fi Fingerprint Smart Lock if
- You want a lock that connects directly to Wi-Fi without a hub
- You prefer using replaceable AA batteries for long-term power
- You already use the eufy Security app for other devices
Choose Aqara U400 UWB Smart Deadbolt if
- You want hands-free entry using UWB technology
- You need a rechargeable battery with USB-C charging
- You are building a Thread-based Matter smart home
Verdict: Choose the eufy Security C220 if you want simple Wi-Fi connectivity and the convenience of replaceable batteries. Pick the Aqara U400 if you value hands-free UWB entry and a rechargeable power system. Your choice depends on whether you prioritize direct Wi-Fi or advanced proximity features.
eufy vs Aqara Smart Locks Compared
power source
The eufy Security C220 uses eight AA batteries, offering up to eight months of operation per set. This disposable power method requires you to replace cells when drained. In contrast, the Aqara U400 features a rechargeable lithium battery lasting up to six months. It supports USB-C charging without taking the lock offline, and the battery is removable for separate charging. Both systems provide low-battery alerts, but the Aqara U400 eliminates the need for frequent battery replacements, offering a more convenient long-term power solution for users who prefer rechargeable options over disposable ones.
connectivity
The eufy Security C220 includes built-in Wi-Fi, allowing direct connection to your home network without a separate bridge. This setup simplifies installation and enables remote control via the eufy Security app from anywhere. The Aqara U400 relies on Thread connectivity, which requires a Thread-enabled Matter controller like a HomePod or Apple TV. Thread offers faster response times and lower power consumption compared to Wi-Fi. While the eufy C220 provides straightforward standalone connectivity, the Aqara U400 demands specific hub hardware to function within its ecosystem, impacting setup complexity and network dependency.
access method
The eufy Security C220 supports six unlock methods: fingerprint, app, keypad, physical key, Apple Watch, and voice assistants. Its self-learning AI fingerprint sensor adapts to your touch over time. The Aqara U400 adds Ultra-Wideband (UWB) technology for true hands-free unlocking as you approach, provided you have compatible Apple devices. It also includes Apple Home Key, NFC card support, and fingerprint entry. While the eufy C220 offers broader traditional access options like a keypad, the Aqara U400 provides advanced proximity-based entry that eliminates the need to touch the lock entirely.
smart home compatibility
The eufy Security C220 integrates with Alexa and Google Voice Assistant, allowing voice control and routine automation within the eufy Security app. It works seamlessly with other eufy devices like doorbells. The Aqara U400 supports Apple Home and Matter over Thread, enabling cross-platform compatibility. It requires specific Matter controllers for each ecosystem. The Aqara U400 also integrates with Aqara cameras for live video interaction. While the eufy C220 is optimized for its own ecosystem and major voice platforms, the Aqara U400 offers greater flexibility for users invested in Apple Home or multi-ecosystem setups via Matter.
build and durability
Both locks carry BHMA certifications for security and durability. The eufy Security C220 is IP53 waterproof, protecting against light rain and dust, and operates in temperatures from -22°F to 158°F. The Aqara U400 boasts an IP65 rating, offering superior protection against dust and water jets. It also features a rekeyable design, allowing you to change the physical key without replacing the entire cylinder. The Aqara U400 provides better environmental sealing and maintenance flexibility, making it more suitable for harsh outdoor conditions or users who prefer changing keys over replacing hardware.
Choose the right smart lock for you
Users wanting simple keyless entry without extra hubs
The eufy Security C220 uses built-in Wi-Fi, so you do not need a separate hub for app control. It offers six unlock methods, including fingerprint, keypad, and voice commands. The self-learning AI improves fingerprint recognition over time. You get eight months of battery life from standard AA cells. This setup is straightforward for most standard deadbolts.
Apple Home users seeking hands-free access
The Aqara U400 supports UWB technology for true hands-free unlocking when you approach. It integrates with Apple Home Key and Matter over Thread for stable, low-latency connectivity. You can use an iPhone or Apple Watch to enter without touching the lock. The rechargeable battery lasts up to six months and charges via USB-C. This is ideal for deep Apple ecosystem integration.
Buyers prioritizing long battery life and durability
The eufy Security C220 provides up to eight months of operation on eight AA batteries. It is BHMA Grade 3 certified and withstands over 100,000 lock cycles. The IP53 rating protects against water and dust. Operating temperatures range from -22℉ to 158℉. This makes it a durable choice for varying weather conditions without the need for frequent recharging or battery swaps.
The products compared
eufy Security C220 Wi-Fi Fingerprint Smart Lock
Best for: eufy ecosystem users and Android owners
- Access Methods
- Fingerprint, app, keypad, key, voice
- Connectivity
- Built-in Wi-Fi
- Smart Home Compatibility
- Alexa, Google Voice Assistant
- Included Door Hardware
- Deadbolt
- Power Source
- Battery Powered
- Water Resistance
- Waterproof
View on Amazon: eufy Security C220 Wi-Fi Fingerprint Smart Lock Affiliate link
The eufy Security C220 is a keyless entry deadbolt featuring built-in Wi-Fi and self-learning AI fingerprint recognition. It supports six unlock methods, including app control, keypad, physical keys, and voice commands via Alexa or Google Assistant. The lock runs on eight AA batteries for approximately eight months and holds a BHMA Grade 3 certification. It is designed for standard deadbolts with bores under 54mm. This model suits users seeking reliable wireless access without a separate hub.
Pros
- Built-in Wi-Fi requires no separate bridge for app control
- Self-learning AI fingerprint sensor recognizes users in under one second
- BHMA Grade 3 certified for durability after 100,000 cycles
- IP53 waterproof rating and wide operating temperature range
- Integrates with eufy doorbells for automated routines
Cons
- Lacks Apple Home Key support unlike the Aqara U400
- No UWB (Ultra-Wideband) technology for proximity-based unlocking
- Does not support native Apple HomeKit integration
Good fit if
- You want to control your lock from anywhere using the eufy Security app
- You already use eufy doorbells and want unified smart home routines
- You prefer fingerprint or keypad entry over smartphone proximity unlocking
Skip if
- You rely exclusively on Apple Home and need Home Key compatibility
- You want UWB precision for automatic door unlocking as you approach
- You need native HomeKit support without third-party bridges
Verdict: The eufy Security C220 Fingerprint Deadbolt offers solid security and convenient app control for Android and Alexa users. It is the right choice if you value fingerprint speed and eufy ecosystem integration over Apple-specific features.
Aqara U400 UWB Smart Deadbolt
Best for: Apple users wanting hands-free UWB entry
- Access Methods
- Fingerprint, keypad, app, key, NFC, UWB
- Connectivity
- Matter over Thread, UWB
- Smart Home Compatibility
- HomeKit, Alexa, Google, Home Assistant
- Included Door Hardware
- Deadbolt
- Power Source
- Battery Powered
- Color
- Silver
View on Amazon: Aqara U400 UWB Smart Deadbolt Affiliate link
The Aqara U400 is a silver deadbolt featuring UWB hands-free unlocking and Apple Home Key support. It uses Matter over Thread for stable connectivity and includes fingerprint, passcode, and physical key entry. The lock offers a rechargeable battery lasting six months and is BHMA-certified with IP65 outdoor durability. It suits Apple ecosystem users seeking automated access without touching the device.
Pros
- UWB technology enables hands-free unlocking as you approach
- Supports Apple Home Key for tap-to-unlock with compatible devices
- Matter over Thread ensures fast, secure multi-ecosystem connectivity
- Rechargeable battery allows USB-C charging without taking the lock offline
- BHMA-certified security with IP65 weather resistance
Cons
- UWB hands-free unlocking requires specific Apple Watch and iPhone models
- NFC card access requires a separately sold card
- No support for non-Apple smart home platforms beyond Matter
Good fit if
- You use an iPhone 11 or later with iOS 18.5+
- You want hands-free entry when your hands are full
- You prefer a rechargeable battery system over disposable AA cells
Skip if
- You do not own a Thread-enabled Apple Home hub
- You need NFC card support without buying a separate card
- You rely on non-Apple smart home ecosystems for primary control
Verdict: Aqara U400 UWB Smart Lock is ideal for Apple users who want automated, hands-free entry. It fits those with compatible iPhones and Apple Watches who value Matter over Thread stability.
Specifications side by side
| Spec | eufy Security C220 Wi-Fi Fingerprint Smart Lock | Aqara U400 UWB Smart Deadbolt |
|---|---|---|
| Access Methods | Fingerprint, app, keypad, key, voice | Fingerprint, keypad, app, key, NFC, UWB |
| Connectivity | Built-in Wi-Fi | Matter over Thread, UWB |
| Smart Home Compatibility | Alexa, Google Voice Assistant | HomeKit, Alexa, Google, Home Assistant |
| Included Door Hardware | Deadbolt | Deadbolt |
| Power Source | Battery Powered | Battery Powered |
| Access Method | Fingerprint, Remote Control | Fingerprint, Key |
| Water Resistance | Waterproof | not stated |
| Color | Black | Silver |
| Application | Front Door | Home |
| Style | Modern | not stated |
| Dimensions | 7.67 × 4.49 × 4.41 inches | 3 × 4.2 × 7 inches |
| Model | T8506 | DL-D16E |
Frequently asked questions
Which smart lock is better for Apple users?
The Aqara U400 is the better choice for Apple users. It supports UWB technology, enabling hands-free entry when you have a compatible iPhone and Apple Watch nearby. This feature automates unlocking as you approach the door. The eufy Security C220 does not offer this specific hands-free capability, making the Aqara lock the superior option for those deeply integrated into the Apple ecosystem.
Does the eufy C220 require a hub?
No, the eufy Security C220 does not require a separate hub. It features built-in Wi-Fi connectivity, allowing you to control the lock directly through the app. This simplifies your smart home setup by removing the need for additional hardware. You can manage access methods like fingerprints and keypads without relying on a central bridge device for communication.
How many unlock methods does the eufy C220 support?
The eufy Security C220 supports six distinct unlock methods. These include fingerprint scanning, a numeric keypad, and voice commands via compatible assistants. It also accepts physical keys and other standard access modes. This variety ensures you have multiple ways to enter your home, catering to different preferences and situations where other methods might be inconvenient or unavailable.
What is the main difference in connectivity between the two locks?
The primary difference lies in their connection protocols. The eufy Security C220 uses Wi-Fi for direct app control, while the Aqara U400 utilizes UWB and Matter over Thread for proximity-based entry. Wi-Fi allows for broader remote access without a hub, whereas UWB offers automated, hands-free unlocking for Apple devices. Your choice depends on whether you prioritize remote control or seamless automated entry.
Can I use fingerprints on both locks?
Yes, both locks support fingerprint entry. The eufy Security C220 uses fingerprint scanning as a primary access method, designed for speed and convenience. The Aqara U400 also includes fingerprint recognition alongside key access. This shared feature ensures you can unlock both doors quickly using your biometrics, providing a consistent level of convenience regardless of which brand you select for your home.
Which lock is better for Android users?
The eufy Security C220 is the recommended choice for Android users. It offers solid security and convenient app control specifically optimized for Android devices. The lock integrates well with Alexa and other smart home platforms commonly used with Android. While the Aqara U400 works with various systems, the eufy lock’s design prioritizes the Android experience, making it the more suitable option for this user base.