Experience ultimate security and convenience with our Smart Adjustable Cylinder Bluetooth Doorlock. This cutting-edge lock combines multiple unlocking methods, including fingerprint recognition, numeric code entry, and Bluetooth connectivity through our ENERJSMART app. With the adjustable cylinder, it is suitable for doors with thickness ranging from 35mm to 75mm. njoy seamless access control, advanced security features, and remote management right at your fingertips. Features: Adjustable Lock Cylinder: Will fit on any door with a thickness of 35-70mm with an industry-standard deadbolt borehole that is 2-1/8" in diameter. Each lock comes with rubber spacers to help create the most secure fit 4 Ways to use: Fingerprint, Keypad, App via Bluetooth or mechanical keys Remote Monitoring: Can monitor on the app remotely, which user used the door and when. Also generate codes when connected to bluetooth to your doorlock, and give them to your visitors Sleek Design and Easy Installation: Nice S