1.Two level management 2.1:N verification mode 3.Fingerprint/Password match mode 4.Keep unlocking function 5.None disturbed function 6.Override key 7.Low power prompt 8.Stores 50 users,100 fingerprints 9.Operating temperature: 0F-130F (Wide temperature) 10.Environmental humidity: 0%-00% 11.Scaning time:<1s 12.Recognition time:<0.2s 13.Static power consumption:<5u A 14.Dynamic power consumption:<300 mA 15.Power source:6 AA alkaline batteries 16.Weight:4500g working/Record function (F220C): 3000 records can be checked though connection with computer