... "du", "du" sound, yellow lights, this password will automatically is set to complete.2. Modify user code: ... hear "du" "du" two sound, yellow light turn on, then into the coding state, input 1-eight new ... hear "du" "du" confirming sound, yellow lights turn off, the password set to complete.Second, open the ... the open for 5 seconds, the password is not correct, ring tones tip password mistake buzzer. ...