# Smart Lock U400

**Doorprice Score 6.0/10** (Mixed; likely 4.1–7.9, low confidence).
Price: $269.99 at Aqara LLC (with est. tax $289.67; shipping set at checkout). Store rating 4.3/5 from 6 ratings.

## Specs
- Wireless Protocols: Bluetooth 5.2, Thread, UWB, NFC
- Operating Temperature: 18°C to 55°C (0.4°F to 131°F)
- Operating Humidity: 0–93% RH (non-condensing)
- Battery: 4800 mAh rechargeable lithium-ion, USB-C charging
- Certifications: IP65, BHMA Grade 3
- Dimensions: Inner panel 178.76 x 46.9 mm, Outer panel 167.76 x 25.5 mm

## Where to buy
Buy at Aqara LLC: https://us.aqara.com/cart/51468194185498:1?_gsid=agoSFXF8ExNH&utm_source=shopify&utm_medium=catalog
For the price delivered to a ZIP (real shipping options, promotions, estimated tax) ask for the delivered price of shopify:5JVwIQcGn12nqVQHsCVbiK.