Amazon
Aqara U400 on Amazon (15% OFF)
Published: March 30, 2026
Video Description
Aqara U400 on Amazon (15% OFF): https://www.amazon.com/dp/B0FRS6T6HL?maas=maas_adg_BFE14275BC926C4A03F5A143D8CD99F3_afap_abs&ref_=aa_maas&tag=maas&th=1
In this video, I test the new Approach Direction with UWB on the Aqara U400 smart lock with iPhone. A feature that allows your door to unlock automatically based on how you approach it. This isn’t just another smart lock — it’s a glimpse into the future of the Apple ecosystem, where your iPhone understands distance, direction, and intent. I break down how UWB works on iPhone, why approach direction is such a big deal for smart homes, and whether the Aqara U400 is the best HomeKit smart lock right now. If you’re into Apple Home, HomeKit, smart home automation, or want to see how your iPhone can replace your keys completely, this is for you.
00:00 Welcome
00:10 What is UWB?
00:44 Meet the Aqara U400
00:56 Approach Direction
2:06 Apple Home Integration
03:23 Installation
03:51 Apple Home Key
04:43 Design
05:26 Back Device
05:49 Matter Compatibility
06:09 Ways To Unlock It
6:39 Battery Life
07:07 Honest Opinion
08:19 Subscribe
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