Aqara's U600 Is the Smart Lock British Doors Have Been Waiting For

On October 14, Aqara put a new smart lock on sale in the United Kingdom, and for once the news is not about another app or another subscription. The Smart Lock U600 costs £229.99 on Amazon.co.uk, and its distinguishing feature is architectural: it was designed for British doors. That sounds like a small thing until you try to fit a smart lock engineered for an American deadbolt onto a uPVC multipoint system. The U600 skips that improvisation entirely.

It also arrives with the full alphabet of modern door credentials. Apple HomeKey and Samsung Wallet Key for tap-to-unlock from a phone, a fingerprint reader, PIN codes, NFC cards, voice control through Siri and Alexa, and a plain old physical key. Underneath, it connects over Matter via Thread, which makes it one of the first locks to treat the phone in your pocket, rather than any single smart home platform, as the credential.

A lock that fits the door you already have

The reason most smart locks fail at a British front door is mechanical, not digital. UK doors commonly use multipoint locking systems, where one handle action throws bolts at several points up the frame. They are standard on uPVC, composite, and timber doors across the country. Most smart locks were engineered around the single-cylinder deadbolts common in North America, or the Euro cylinders of continental Europe, and adapting them to a multipoint setup usually means replacing hardware or living with compromises.

Aqara designed around that reality. The U600's exterior panel measures 335 by 40.5 by 28 millimetres, slim enough to sit on a standard British door, and it supports doors between 40 and 80 millimetres thick, with centre distances of 72 to 92 millimetres and backsets from 35 to 70 millimetres. Installation takes 15 to 30 minutes with a screwdriver, Aqara says, with no drilling or wiring. It is also reversible: you can reinstall your original lock when you move, which makes it a realistic option for renters, a group smart locks have mostly ignored.

The exterior panel carries an IP65 rating for dust and water, with protective coatings on the electronics, and it is rated to operate from minus 20 to plus 55 degrees Celsius. That is the unglamorous end of the spec sheet, and it is exactly where cheap smart locks tend to fail: British weather, applied directly to electronics, for a decade.

HomeKey, Wallet Key, and the missing radio

The headline credential is Apple HomeKey. Hold a compatible iPhone or Apple Watch near the lock and it opens; with Express Mode there is no need to wake the phone or open an app. Apple's Power Reserve feature keeps HomeKey working for up to five hours after the iPhone's own battery has died, which quietly solves one of the two classic smart lock failure modes. The other, the lock's own battery, is addressed below.

Samsung owners get the equivalent: Samsung Wallet Key, a tap-to-unlock experience for compatible Galaxy phones. That dual citizenship matters because most locks pick a camp. Beyond the phone, the U600 offers a fingerprint reader that stores up to 50 prints with a claimed recognition time of about half a second, PIN codes that can be permanent, temporary, or scheduled, NFC cards (sold separately), voice control through Siri and Alexa, and a conventional key for the day nothing electronic cooperates.

The notable omission is ultra-wideband. Aqara's own U400, shown at CES 2026, uses UWB to unlock hands-free as you walk up, and the U600 skips it. The trade-off is easy to read: UWB radios cost money and draw power, and for a lock priced at £229.99, Aqara appears to have decided that seven working unlock methods beat eight. HomeKey with Express Mode already delivers most of the convenience a UWB radio would, minus the party trick of the door opening before you touch it.

Matter over Thread, with an Aqara-shaped asterisk

Connectivity runs over Matter via Thread, which means the lock works with Apple Home, Amazon Alexa, Google Home, SmartThings, and Home Assistant, provided you have a Matter controller and a Thread border router on the network. In practice that means a recent HomePod, Apple TV, Echo, or Nest device acting as the border router. No Aqara hardware is required for the basics.

The asterisk: remote unlocking and automations that tie the lock into the rest of an Aqara setup (unlock the door, disarm the Aqara alarm, start the lights) need an Aqara hub, such as the M3, M200, M100, G5 Pro, or G410. Aqara deserves some credit here: none of this requires a subscription. In an industry that has spent the last five years moving features behind monthly paywalls, a lock whose full feature set costs the purchase price and nothing after is worth noting.

Power comes from four AA batteries, which Aqara says last up to 10 months depending on use, with low-battery alerts before they give out. If they do anyway, a concealed USB-C port on the exterior panel accepts a power bank for an emergency charge, with no disassembly required. It is a less theatrical solution than the hand crank Ring put on its first smart lock, and a more practical one: most people own a USB-C cable and a power bank, while almost nobody can find the spare key they hid.

Most smart locks are built for an American deadbolt, then apologized onto a British door. The U600 starts with the door that is actually there.

Why this launch is bigger than one lock

The U600 lands in the middle of a smart lock land rush. Ring announced its first smart lock on October 7, with a hand-crank backup dial and four entry methods, aimed at the US market in early 2027. Apple's own smart home push, centred on the HomeView hub and a collection of LG-built accessories, is about to make the front door a contested piece of real estate. Aqara itself is not standing still: the U400 with hands-free UWB unlock is its halo product, and the company also showed the U250 at IFA 2026. The U600 is the workhorse of that lineup, and the one aimed at the largest underserved market: the millions of British doors whose multipoint locks made them hostile to smart hardware.

There is a standards story underneath. Matter over Thread is doing what the smart home industry promised for a decade: a lock that talks to every major platform without a vendor cloud in the middle. The next step, a universal digital-key standard called Aliro, would let the same credential work across ecosystems the way USB-C cables work across devices. Aqara has already tied Aliro support to its U250 lock. The U600 does not have it, but its architecture points that way: the phone as credential, the lock as a radio, the platform as optional.

For now, the pitch is simpler. A British door, a lock that fits it in half an hour with a screwdriver, and seven ways to get in. After a decade of smart locks that asked you to change your door to suit the technology, that is not a small thing.