The Aqara Smart Door Lock A100 Zigbee Specifications Model Number ZNMS02ES Product Dimensions 375×77×23.6 mm (panel) Operating Temperature -25°C~55℃ Net Weight 3.6kg Wireless Protocols Bluetooth 5.0, Zigbee, NFC Operating Humidity 0~93% RH, no condensation Power Supply Modes 8 AA Dry Batteries (6V); USB-C Emergency Power Supply (5V)