... , the system power-on: Power-on self-test ring“di di” ,system enter standby mode. Second, add fingerprint: add ... red light, press on the finger tips buzzer, ring "Di" , raised your finger, waiting for it light red ... if right acquisition is to Ring a long "Di." its System then continue to wait for the operation ... .5V, when open the door it remind the " Di,Di,Di" three times to tell the users to replace the ...