Incorporate flat design elements into the design of smart lock, which can reduce product complexity and enhance intelligence. When the correct password or fingerprint is inputted, the door will automatically open. That is the fully automatic function of smart door lock. The use of 2.5D high-strength tempered glass display touch panel, all aluminum alloy CNC processing, can effectively prevent violent opening. And equipped with an alarm system, it can notify the illegal unlocking to the user through the application. The financial system AI fingerprint security chip protects the lives and property of families. Adapting to 99.9% of the lock cylinder on the market, it can be quickly installed without destroying the door.The fourth generation ultra-thin motor independently developed by Romance is only the 60% of the size of the ordinary motor, which makes the smart lock slim.