Product DescriptionThe CDVI A22K NB controller is a high security access control device designed for reliable performance and easy system integration. It supports two doors and four readers, offering flexible access management options for both small and large installations. Built with an integrated web server and advanced AES 256 bit encryption, it allows secure remote configuration and monitoring of users, credentials, and event logs. The controller supports up to ten thousand users and can be expanded to manage multiple doors across larger networks. Compatible with standard Wiegand readers as well as CDVI Krypto series readers, it provides a versatile solution for upgrading existing systems or creating new secure environments. Its durable design and professional level functionality make it ideal for commercial buildings, offices, and institutional facilities that require dependable access control and scalable security management.