Double the Security with Auto and Double Lock Features 
The automatic lock eliminates the need for users to manually lock when going out. If needed, users can utilize the double-lock feature designed to keep doors locked even with the password and key tag confirmation. Particularly, this feature helps give parent's with young children peace of mind if children accidentally go out unattended and to prevent intruders from using alternative door openings such as pet doors to break in. 
Greater Safety in an Emergency with the Samsung Smart Door Lock's Security Assurance Features 
Having surpassed many tests including withstanding high-voltage electric surges, simulated theft scenarios, and fire with impressive results, one's security is guaranteed with high quality, and innovative technology. In the case of a fire, and when temperatures reach over 60 degrees Celsius, the system is specifically designed to trigger the alarm and unlock the door thereby allowing the user to manually open the door using the lever in case the lock loses its electronic functions. 
Clever Sound Adjustment Features 
With the ability to set and adjust the number pad volume, this feature makes living more comfortable if arriving home late at night or when a baby is sleeping. 
Modern, Slim, Black & Silver Design 
With a slim metallic and black design, the casing gives the Door Lock a modern and sophisticated ergonomic look. 
Emergency Power Supply Feature 
In the event that batteries run out, the door can be opened from the outside by using a 9V battery.