Aqara’s U400 is an existing alternative to waiting for another smart-home hardware launch. CES coverage highlighted hands-free ultra-wideband unlocking and a $269.99 launch price.
The attraction is precise proximity detection, but lock selection depends on your door, batteries, backup access, phone and watch compatibility, and real-world reliability.
The published price is a reference from earlier in 2026, not a verified current checkout price. Compare fit and requirements before shopping.
Action: check the U400’s physical compatibility and Apple-device requirements against your actual door.