The ZKTeco C3-100 Package B is an IP-based door access control solution designed for single-door management in professional security installations. This complete package includes the C3-100 controller housed in a secure metal enclosure with keys, offering a reliable and ready-to-install system. Supporting up to 30,000 card users and 100,000 event records, the C3-100 Package B ensures continuous operation even during power outages or network interruptions, with all data safely preserved. With TCP/IP communication and compatibility with a wide range of card readers, it delivers advanced access control that is both secure and dependable for offices, commercial buildings, and controlled areas.