Aqara Smart Lock U400

The Aqara Smart Lock U400 is a US-style deadbolt with ultra-wideband hands-free unlock, Matter-over-Thread, Apple Home Key, fingerprint, keypad and NFC. It is the lock 2026 reviews measure against, and cheaper than the UWB rivals from Schlage and Ultraloq. The one thing to know: the approach-to-unlock feature needs a UWB-capable iPhone.

Is the U400 the right smart lock for a small premises?

• Priced at $269.99 on us.aqara.com (August 2026).
• Covered by Consumer Reports, Tom's Guide ("made for Apple Home") and HomeKit News in 2026.
• Fingerprint and keypad codes suit staff access without handing out keys; Matter-over-Thread keeps it local.
• Fits US deadbolt doors only.

For Gulf or European doors, the Aqara U200/U300 or a SwitchBot retrofit lock fit better. See the home automation category for hubs and sensors that pair with it.

Who should skip it

Anyone outside North America with a non-deadbolt door, or on Android where the UWB unlock does not apply, should choose a retrofit lock instead.

Research-based listing — not hands-on tested by Digital4All; details as of September 2026.