... set by two buttons,displaying contents includes(B,G,M,F,L,E,0,1,2,3 ... the encoded displaying contents, the high digit of LCD will blink at the same time,press C_KEY ... incremental button to select among(B,G,M,F,L,E,0,1,2,3 ... press C_KEY incremental button to select among(B,G,M,F,L,E,0,1,2,3 ... button pressing or no input signal changing, the LCD back light will turn to energy saving status after ...