1. Use EM card 2. 10000 cards, 30000 records 3. USB memory, RS232, RS485 4. Built-in network firewall 5. LCD display OTA680 Proximity Card Time Attendance & Access Control Technical Parameters: Item Specification Access Mode EM card (ID card) Capacity 10,000 cards; 30,000 records Response Distance > 3cm Communication Protocol USB memory, RS232, RS485 Input Power DC9V~12V, 500mA Current 190mA ...