HMI (Human Machine Interface) Text display OP320-A The 20 keys can
be defined to be function keys (In which 12 keys can be defined to be
number keys and other usage), take the place of some mechanic keys on
the control tanksChoose communication format freely, RS232/RS422STN LCD
display with back light, can display 24 letters*4 lines3.7 inch,
monochrome LCD, 192*64 pixels, 1 MB FlashROM, 20function keys.