Smart Locks Get a High-Tech Upgrade: Aqara's U400

Packed with Cool Features

Aqara has just launched a new smart lock, the U400, at CES 2026. It's packed with cutting-edge features, including UWB technology, which allows you to unlock your door without even taking your phone out of your pocket.

Hands-Free Unlocking

The U400 uses UWB chips in iPhones to unlock the door as you approach. No need to tap your phone on the lock—it's completely hands-free! The lock is super precise, able to detect if you're coming from the left, right, or straight on, helping to avoid accidental unlocks.

Apple Home Key Integration

The U400 also works with Apple's Home Key, allowing you to store a digital key in your Wallet app. This lets you unlock the door with your iPhone or Apple Watch. But with UWB, it's even easier—no PIN, no tap, no fuss.

Versatile Unlocking Options

This lock is incredibly versatile. You can unlock it with:

• A fingerprint
• NFC
• A key
• A code
• Temporary codes for guests

The lock can auto-lock after a set time and includes a Passage mode if you want to leave the door unlocked.

Smart Home Friendly

The U400 is designed to be smart home friendly. It works with HomeKit and can be controlled via the Home app. You can use Siri to control it too. It's also compatible with the Aqara app and hub. Plus, it supports Matter and Thread, making it future-proof.

Top-Notch Security

Security is a top priority. The U400 uses time-of-flight signals, making it more secure than Bluetooth. It's also weather-resistant with an IP65 rating. The battery is rechargeable and lasts up to six months.

Design and Installation

Aqara offers the U400 in Silver and Black. It's designed to replace standard deadbolts. The package includes all the hardware you need for installation.