Anviz Optical sensor Template storage capacity:101 fingerprints Identification: either fingerprint, pin/code or mechanical key Slide cover, fashion design Music buzzer, enjoyable to ears Fast image scan time/verification speed within 1 sec Blue back light keypad, be convenient use in the night External power supply available if internal battery runs out FRR (false rejection rate): <0.1% FAR (false acceptance rate): <0.0001% Response time: 0.5-1s Battery: 1.5V x 8 battery power supply, supports 4,500-9000 operations, Alarm Feature: tamper alarm, threatening door-open alarm Long time opening mood, more personalized