... 32 bit ARM920T, strong image processing, high performance and reliability. 3.Miaxis SM-621 optical sensor, scratch-resistant ... , blue background light. 4.Support professional access control, and one user, multi-users combination door open, entry control ... 0001%Identification time ≤1s, 3,000 fingerprints,1:NRegister method Fingerprint, passwordFingerprint capacity 2,000/3,000 fingerprintsUser capacity ...