... to modify the encoded displaying contents, the high digit of LCD will blink at the same time,press C_KEY incremental ... ,3,4,5,6,7,8,9 “Black”)as displaying contents of the high digit of the LCD;then press F_KEY ... button to switch to low digit and it will blink ... 2,3,4,5,6,7,8,9 “Black”)as displaying contents of low digit of the LCD.4.2 Factory ...