The SHS-3320 is a digital door-lock attached to office and home gateways. It is distinguished by its easy to use and safe access controls which use various access methods such as passwords, RFID cards, and emergency keys. Its design emphasizes a sophisticated look with blended harmony between the lines and highly glossy, black, and metallic material. Robust die-casting metal material is also used for its inner and outer parts, offering reliability and practicality. It is designed to minimize the environmental burden by providing for easy disposal and recycling with direct processing of raw materials and minimal finishing processes.