S990 is a RFID identification T&A and access control terminal which has a capacity of 10,000 cards and 1, 00,000 transaction logs with fastest identification speed of less than or equal to 0.1 second. The wiegand-in interface is used to connect external reader to construct master and slave system. Multi-model communications consisting of RS232/485, TCP/IP, USB host and Wi-Fi/GPRS (optional) allow an extremely easy data management. It also has optional Wi-Fi and GPRS connectivity. The USB-host is used for data download and upload, including user template and record etc. Optional built-in 2000 mAh battery eliminates the trouble of power failure. It enables enterprise to manage more employees with less cost.