... 4,5,6,7,8,9 “Black”), can randomly be one among them or unit of two. 4. Entry & Exit ... 1 Programming Operation of Encode input display content:Press F_KEY button to display FL, 00 will blink at the same ... the high digit of the LCD;then press F_KEY button to switch to low digit and it will blink,and press ... . 4.8 Energy saving status When there is no button pressing or no input signal changing, the LCD back ...