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

Aqara just launched a new smart lock, the U400, at CES 2026. It's packed with cool features, like UWB technology. This tech lets you unlock your door without even taking your phone out of your pocket. It's like magic, but with science! 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 hands-free! The lock is super precise. It can tell if you're coming from the left, right, or straight on. This helps avoid accidental unlocks. The U400 also works with Apple's Home Key. You can 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.This lock is versatile. You can unlock it with a fingerprint, NFC, a key, or a code. You can even set temporary codes for guests. The lock can auto-lock after a set time. There's also a Passage mode if you want to leave the door unlocked. The U400 is 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, so it's future-proof. Security is top-notch. 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. 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.