... treatment function of 3-6 digits Selection of password display or not display after closing door each timeAble to forcibly open ... of 3~6 digit, and the system will confirm automatically.2. If the password is correct, “OPENED” will display and buzzer sound ... closed, press the key “↓” twice, “super” will display before inputting master password of 6 digit, (no number displayed but replaced by “-"), the ...