1、This lock supports App to remotely control the on/off status of the lock and has a password sharing function, allowing you to control and know the safe use of the home lock anytime and anywhere. It has unlocking methods such as Bluetooth unlocking, password unlocking, mechanical key unlocking, and card unlocking. 2、With automatic sleep low power consumption mode, low battery prompt and USB emergency power supply interface power supply, so you don't need to worry about the lock power. 3、High?frequency encryption card unlocking, not afraid of degaussing, safe encryption, compact and light, easy to carry. The card can support up to 100 users to share experience, and the password design adopts a virtual password design, which can effectively prevent others from peeping. 4、Remote control and gateway, compatible with for Amazon Alexa and for Google Home intelligent voice control system, to achieve voice unlocking, so that the lock can understand your instructions. (Only by cooperating with the gateway can the remote lock and voice control be realized. However, the delivery does not include the gateway, which needs to be purchased by the customer himself) 5、The design is made of aluminum alloy, and the lock cylinder is made of stainless steel, which makes the lock durable and still as new. The length of the nut with multiple fits meets the installation requirements of most door designs in various scenes, and the installation is stable and convenient.