I bought my first house earlier this year, so being the nerd that I am, I’ve prioritized turning my house into a smart home. First on the list was a smart lock. I knew I wanted something with the best possible HomeKit integration, and the Aqara UWB Smart Lock U400 seemed to fit that bill on paper. So far, I’ve been highly impressed thanks to Ultra Wideband support. Installation Installation of the Aqara U400 was pretty straightforward, following this video from Aqara’s YouTube channel. It’s more involved than installing the August smart locks I’ve used in the past, but for good reason. Whereas the August locks typically fit over your existing deadbolt, the Aqara lock replaces the entire system. So in exchange for that slightly trickier installation process, you get a more reliable and “integrated” experience. I installed two Aqara U400 locks, one at the back door and one at the front door. Going into the process, I was a bit worried about the front door installation.…