... 3. Various verification methods, FP, PWD, Card, FP + PWD, FP + Card. 4. Build in backup battery can avoid ... Error) :<0.0001% 13. Verification Method: FP, PWD, Card (optional), FP + Card, FP + PWD 14. Verify Mode: 1:1, 1 ... RS485, USB, GPRS(optional) 16. Separated Time Attendance & Separated Access Control: Support 17. Access Control: Multiple Unlock Periods, Unlock Combinations, Dismantle Proof Alarm ...