ID卡门禁代码。支持串口通讯至管理中心。最多2万张卡-ID card access control code. Support for serial communication to the management center. Maximum of 20,000 cards

适用于开发低频rfid读写器，门禁系统，动物管理系统。-Applicable to the development of low-frequency rfid reader, access control systems, animal management system.