SC202 is a network-based RF card access control machine developed by CCC Intelligence. It has built-in Linux operating system, uses 32-bit processor, standard ICP/IP protocol communication, professional configuration, and uses a special induction card with PSK debugging and encryption function to verify identity, so as to ensure that security performance is more reliable than general security; in management, SC202 can use built-in backlight. LCD screen and backlight keyboard can be operated offline, the machine itself can store comparison records, also can manage the operating system through the computer, using RS232, RS485 to communicate, the quality of international certification, high performance, quality, reliability and stability is the best choice for users.