[6-in-1 Keyless Entry]Experience the convenience of our smart door lock that offers multiple unlocking methods: App (via Bluetooth), Fingerprint, Code, Access Card, NFC Devices, and Mechanical Key. Perfect for quick and secure access to your home. [Automatic Locking Feature]Never worry about leaving your door unlocked again. Our smart lock automatically secures your door 6 seconds after unlocking, ensuring your home remains safe even during the busiest moments. [Advanced Access Management]Utilize the app to manage entry permissions efficiently. Grant access to family or guests, monitor entry logs, and receive alerts. Features various code options including permanent, one-time, and anti-snooping. [Long-Lasting Battery Life]Enjoy with just 4xAA alkaline batteries. Conveniently replace batteries from the front panel without the risk of being locked out, thanks to our user-friendly design. [Easy DIY Installation & Reliable Support]Install our S1 keyless entry door lock effortlessly without additional drilling. Colour:Black Material:Metal Package Contents: 1 x Smart Door Lock(Without 4xAA batteries,You need to prepare yourself) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.