* Lock plates and handles are made of pure copper, and electro-plated with nickel. All-in-one structure. It is indurative
* The design is simple and lively, for top end hotels
* Dissociative working method of front handle prevents unlocking forcefully
* It has 6 years' quality assurance on surface
* There are 2 technics in electronic parts to select such as PHILIPS or TEMIC