Xiaomi is expanding its smart home lineup again, this time with a more advanced version of its Smart Door Lock 4 Pro. The new Dual Camera Edition has officially launched in China, bringing upgraded hardware and improved security features over the original model released earlier this year.

The headline upgrade is right in the name: Xiaomi has added a second camera to the new model. While the standard Smart Door Lock 4 Pro includes a single 2MP camera with a 152° field of view, the Dual Camera Edition steps things up with a 3MP main camera offering a 160° FOV, paired with an additional 2MP camera with a 128° FOV. The combination should give users a wider and clearer look at who’s outside their door.

Xiaomi has kept its set of twelve unlocking methods, covering everything from AI facial recognition and palm vein scanning to fingerprint recognition, NFC, Bluetooth, and traditional passcodes. As always, there’s a physical key included as a last-resort backup.

Inside the home, the lock features a 3.97-inch display for checking who’s at the door before opening it. The device supports Bluetooth and Wi-Fi, allowing users to stream live video from the lock in the Xiaomi Home app, receive alerts if someone approaches or tampers with the lock, and manage settings remotely.

Xiaomi has also boosted battery life for this model. The Dual Camera Edition uses a combination of a 6,870mAh lithium battery and four AA alkaline batteries, which together promise up to six months of use on a single charge — a noticeable improvement over the original.

Pricing and availability:

The Smart Door Lock 4 Pro Dual Camera Edition is priced at CNY 2,899 (~$408) in China. Xiaomi hasn’t launched its smart door locks in markets like Europe yet, though it already sells other smart home devices there, such as the Xiaomi G30 Max cordless vacuum cleaner.

For now, the Dual Camera Edition remains China-only, but it signals Xiaomi’s continued push into more sophisticated smart home security products.

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