Dahua Bluetooth Airfly smart lock DHI-ASL2101S > 5-way opening: Bluetooth, DMSS App, Mifare Cards, passwords and mechanical keys > Privacy password: xxx password xxx, preventing password to be seen by others > Passage Mode and Non-disturbance Mode optional > Auto lock when come across a consecutive invalid passwords or cards > Low Voltage alarm(<4.5V) > Huge storage: 50 cards, 50 passwords, 8 Bluetooth > Emergency power supply outside > Two colors optional > Zinc alloy material
