Great @kimsungmin for finding this product. As for my personal review below :

Pros :

• It will help yourself and your family safe and secured at home where it has camera and and access code, in which code will be verified before they can enter you house.
• You can also set some configurations for legit guest and visitors to have easy access to your house.It has also audio system that automatically messages them when they finally unlocked it.
• You can also access some real-time video streaming through application, checking the person at your door.
• You can remotely lock and unlocked with the use of your smartphone anywhere you like.

Cons :

• The product does cost expensive but the quality and features is really great.