A plethora of excellent smart locks are available on the market. Nevertheless, for iPhone proprietors, **Aqara’s U400** stands out as a premier model worth acquiring at present, providing automatic, keyless entry upon proximity. Equipped with Apple’s U1 ultra-wideband chip, it verifies your identity and disengages the lock without physical interaction, leaving you only to open the entrance upon your return. This intelligent lock is being offered at a reduced price for the inaugural time during the Big Spring Sale, now costing $229.49 (down from its initial $269.99) on Amazon.
In her experiential assessment of the U400, our reviewer Jennifer Pattison Tuohy stated that while touchless entry isn’t a recent innovation, she deemed this specific realization to be the most trustworthy she has encountered. For connection and authentication, Apple’s Home Key leverages both Bluetooth and UWB technologies, and no supplementary application is required.
Beyond its Home Key functionality, the U400 offers multiple unlocking methods: a PIN on its touch-sensitive keypad, a verified fingerprint scan, or even a conventional physical key. Operating as a Matter-over-Thread device, it integrates seamlessly with your preferred smart home platforms. To enable your gadgets to communicate via Thread rather than relying exclusively on Wi-Fi, thereby also extending the doorbell’s battery life, merely a Thread border router is required (examples include modern Apple TV iterations, the second-generation HomePod, and the HomePod Mini, available at different price points).
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