Batteries: 4 AA Batteries (6V) (included)

Battery Cell Type: Alkaline

Lock Type: Keyless American standard deadbolt

Compatible Platforms: Aqara, Apple Home, Alexa, Google Home, IFTTT

Connectivity Protocol: Bluetooth 5.0 and ZigBee 3.0, NFC

Door Gap Compatibility: 2 - 10mm

Door Thickness Compatibility: 35 - 55mm

Emergency Power Supply: USB-C Emergency Port (5V)

Hub Required: YES

International Protection Rating: IPX5

Item Weight: 3.42 Pounds / 1.55KG

Operating Humidity: 0 ~ 93% RH, no condensation

Operating Temperature: Outer Panel: -35°C ~ 66°C (-31°F ~ 150.8°F), Inner Panel: -18°C ~ 55°C (-0.4°F ~ 131°F)

Product Dimensions: 5.3 × 2.9 × 3.5 in. (135.8 × 74.8 × 88.4 mm)