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

Connectivity Protocol: Bluetooth 5.0 and ZigBee 3.0, NFC

Lock Type: Fingerprint Keyless American standard deadbolt, supports 60 / 70mm backset

Batteries: 4 AA batteries required (included) (daily unlocks and auto-locks, > 8 months)

BLE Communication Distance: Over 20 meters in open areas

Color: Shadow Gray / Silver

Door Gap Compatibility: 2 - 10mm

Door Thickness Compatibility: 35 - 55mm

Electrostatic Protection: Contact: 8KV, Non-contact: 15KV

Emergency Power Supply: Type C external power supply, 5V DC

International Protection Rating: IP65 (keypad)

Item Weight: 3.87 pounds / 1.76KG

Material: Zinc

Operating Humidity: 0 ~ 93% RH, no condensation

Operating Temperature: -31°F ~ 151°F (-35°C ~ 66°C)

Zigbee Communication Distance: Over 20 meters indoors