# Aqara UWB Smart Lock U400

*Published: 2026-09-18 | Updated: 2026-09-18 | Source: https://shopsavvy.com/products/aqara-uwb-smart-lock-u400*

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**Brand:** Aqara
**Price Range:** $259.99 - $269.99 across 2 retailers

## Pros
- Seamless integration with Apple ecosystem makes setup and use super easy for iPhone and Apple Watch users
- UWB (Ultra-Wideband) technology enables quick, automatic unlocking as you approach the door, offering high convenience
- Multiple access options, including fingerprint, passcode, physical key, and automatic unlocking, provide versatile convenience
- Rechargeable battery eliminates the need for disposable batteries and simplifies maintenance
- Easy installation and setup process, saving time and effort
- Reliable Wi-Fi connection with no drops for over four weeks, reducing false alerts
- Physical key included as a backup method for unlocking
- The lock significantly improves on older models in terms of convenience and reliability
- The product is praised for overall excellent performance and user satisfaction
- Includes a thread hub for enhanced connectivity and future-proofing

## Cons
- UWB (Ultra-Wideband) unlocking works reliably about 90% of the time; occasional glitches are reported
- Full functionality requires the included thread border hub; using other hubs might limit features
- Firmware updates are only available via the included hub, not through other connected devices like smart TVs
- Battery life and long-term durability are still under observation; only initial positive results reported
- Might be overkill for users without Apple devices or an Apple network at home, as sharing features depend on Apple ecosystem
- Some features could be limited if not set up properly before integrating with HomeKit
- Slight complexity in initial setup for non-Apple users or those unfamiliar with smart locks

## Specifications

| Attribute | Value |
|-----------|-------|
| UPC | 192784002131 |
| ASIN | B0FRS6T6HL |
| Color | Black |
| Shape | Rectangular |
| Lock Type | Deadbolt |
| Brand Name | Aqara |
| Model Name | U400 |
| Unit Count | 1 Count |
| Manufacturer | Lumi United Technology Co., Ltd |
| Model Number | DL-D06E |
|      Brand    |     Aqara    |
| Material Type | Aluminum |
| Control Method | App |
| Item Highlight | Matter Over Thread, Rechargeable Battery, Keyless Entry Deadbolt, Supports HomeKit, Alexa, Google, Home Assistant |
| Controller Type | Amazon Alexa, Apple HomeKit, Google Assistant, Home Assistant, SmartThings |
| Item Dimensions | 3 x 4.2 x 7 inches |
|      Material    |     Aluminum    |
| Customer Reviews | 4.0 out of 5 stars |

## Current Prices

| Retailer | Price | Availability |
|----------|-------|-------------|
| [Best Buy](https://shopsavvy.com/api/redirect/products/6fecda4b-5ca5-4bdb-90d8-277aecc7eea5/offers/6a2c1d3b-46cd-145c-b21c-fd04736f132c?source=shopsavvy&medium=product-page) | $259.99  | Check |
| [Amazon](https://shopsavvy.com/api/redirect/products/6fecda4b-5ca5-4bdb-90d8-277aecc7eea5/offers/bk-d3edd6626f2c0a7c2f529973198b530d?source=shopsavvy&medium=product-page) | $269.99  | Check |

[See every retailer and the full price history on ShopSavvy](https://shopsavvy.com/products/aqara-uwb-smart-lock-u400)

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