1,made of special material 2,used for access control system 3,reliable performance 4,high quality 5,competetive price Smart ... , it was the management of door and keys. Nowadays, it gradually forms a set of complete management system. It plays an important ... card, such as SEWO-M7712\SEWO-M7712Q. According to the system, there are three types: one-body access control, nested access ...