fingerprint lock (DSI228)

1) Fingerprint sensors: optical
2) FRR (false rejection rate): less than 3.5/1000
3) FAR (false accept rate): less than 1/100,000
4) Capacity: 56-440 prints
5) Operating temperature: -30 ~ 70°C
6) Working voltage: 5V/3V
7) May be set 4 safe grades
8) Option color: copper,golden,silver