Materials Copper and stainless steel construction for durability and longlasting reliability. Security and locking Secure locking mechanism: robust antitheft solid lock. Dual operation: can be opened with an external key or an internal rotary button for added security and flexible access control. Installation Easy to install: designed for straightforward setup with minimal complexity. Applications Versatile use: suitable for homes, hotels, and offices, providing reliable security across different environments. 23 practical use scenarios Residential use: secure entry points or interior storage areas in a home, where access control is needed without complicated installation. Hospitality use: hotel guest room doors or service areas requiring dependable, flexible access options for staff and authorized personnel. Office use: secure storage rooms or restricted work areas within an office setting, offering straightforward installation and reliable protection. Key benefits Durable materials (copper and stainless steel) ensure longterm performance and resistance to wear. Strong security with a solid locking mechanism and two access methods (external key or internal rotary button). Quick, uncomplicated installation suitable for a wide range of environments. Broad applicability across residential, hospitality, and commercial settings without sacrificing reliability.