Aqara · Updated July 2026
Aqara Smart Lock U400: price & specs
Aqara Smart Lock U400. Every price and spec below is linked to its source and dated — no guesses.
Source: aqara.com verified ✓ corroborated verify in ledger
Is the Aqara Smart Lock U400 a good buy?
At $270, the Aqara Smart Lock U400 is #12 cheapest of the 19 smart locks we track, where the median is $249.
Specifications
| Price (US) | $269.99 Price $269.99 USD (lock only; Black or Silver) confirmed on us.aqara.com/products/smart-lock-u400 (listed as "Smart Lock U400 $269.99 USD" with Color: Black/Silver). No price is published on the aqara.com/en manufacturer product page (it links out to Buy Now channels). |
|---|---|
| Brand | Aqara |
| Released | — |
| Unlock methods | UWB hands-free unlock on approach (iPhone/Apple Watch), Apple Home Key tap-to-unlock (in Apple Wallet), fingerprint (up to 50 prints, 98.6% accuracy, 0.3s), touchscreen passcode (permanent/offline/scheduled), voice assistant, smartphone app, NFC card (sold separately), mechanical key |
| Connectivity | Thread; Matter over Thread; UWB (Ultra-Wideband); NFC |
| Matter | Yes |
| Auto lock | Yes |
| Battery type | Rechargeable removable Li-ion (USB-C recharge, up to 6 months per charge) |
| Finish options | Black, Silver |
| Install type | Replaces existing single-cylinder deadbolt — DIY |
Source: aqara.com (verified 2026-07-10) · corroborated by us.aqara.com. aqara.com/en Smart Lock U400 product page (fetched 2026-07-10) confirms this is the exact U400 model — its tech-spec table lists the U400 variant product models DL-D06E/DL-D16E/DL-D06D/DL-D16D/DL-D17D/DL-D15D — and states the specs: UWB (Ultra-Wideband) hands-free unlock on approach with iPhone/Apple Watch, Apple Home Key, fingerprint (up to 50 prints, 98.6% accuracy, 0.3s), touchscreen passcodes, Matter over Thread, built-in gyro-sensor Auto-Lock on Close, rechargeable removable Li-ion battery with USB-C recharge (up to 6 months per charge), BHMA-certified, IP65 outer panel, single-cylinder deadbolt install. The us.aqara.com US store page (fetched 2026-07-10) corroborates all of the above and supplies the price and finishes: $269.99 USD for the lock only, available in Black and Silver (1 customer review on page). No release date is stated on either fetched page, so releaseDate and specs.release are left null rather than guessed.
Is the Aqara Smart Lock U400 worth it vs cheaper smart locks?
Aqara Smart Lock U400 against its closest cheaper and pricier smart locks on the specs that matter — every value sourced. See all 19 ranked
| Product | Price | Unlock methods | Connectivity | Matter | Auto lock | Battery type |
|---|---|---|---|---|---|---|
| Aqara Smart Lock U400 this | $269.99 | UWB hands-free unlock on approach (iPhone/Apple Watch), Apple Home Key tap-to-unlock (in Apple Wallet), fingerprint (up to 50 prints, 98.6% accuracy, 0.3s), touchscreen passcode (permanent/offline/scheduled), voice assistant, smartphone app, NFC card (sold separately), mechanical key | Thread; Matter over Thread; UWB (Ultra-Wideband); NFC | Yes | Yes | Rechargeable removable Li-ion (USB-C recharge, up to 6 months per charge) |
| Level Lock | $249 | smartphone app (Bluetooth range), physical key (original hardware retained), optional keypad accessory ($79), optional key card/fob ($20/4-pack) | Bluetooth (built-in); Wi-Fi via optional Level Connect bridge ($79 add-on) | — | No | CR2 |
| Schlage Encode | $299 | keypad access codes, smartphone app (remote), voice assistant (Alexa/Google), physical key | Wi-Fi built-in | No | Yes | AA batteries (battery-powered; quantity not published by Schlage) |
Frequently asked questions
How much does the Aqara Smart Lock U400 cost?
The Aqara Smart Lock U400 has a US price of $269.99 (Price $269.99 USD (lock only; Black or Silver) confirmed on us.aqara.com/products/smart-lock-u400 (listed as "Smart Lock U400 $269.99 USD" with Color: Black/Silver). No price is published on the aqara.com/en manufacturer product page (it links out to Buy Now channels).), as of 2026-07-10.
How does the Aqara Smart Lock U400 compare on price?
At $270, the Aqara Smart Lock U400 is #12 cheapest of the 19 smart locks we track, where the median is $249.
What are the Aqara Smart Lock U400's key specs?
Aqara Smart Lock U400 (Aqara): unlock methods UWB hands-free unlock on approach (iPhone/Apple Watch), Apple Home Key tap-to-unlock (in Apple Wallet), fingerprint (up to 50 prints, 98.6% accuracy, 0.3s), touchscreen passcode (permanent/offline/scheduled), voice assistant, smartphone app, NFC card (sold separately), mechanical key, connectivity Thread; Matter over Thread; UWB (Ultra-Wideband); NFC, matter Yes, auto lock Yes, battery type Rechargeable removable Li-ion (USB-C recharge, up to 6 months per charge). Full sourced spec sheet verified 2026-07-10.
Price of record: $269.99 at aqara.com, 2026-07-25. Other retailers may be lower — check the current price:
See Aqara Smart Lock U400 on Amazon As an Amazon Associate we earn from qualifying purchases.Similar smart locks
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Compare with
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- Level Lock $249
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Step up
- Schlage Encode $299
- Schlage Encode Plus $329
- Level Lock Pro $349
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