... field test and lab project development. With features of durable structure, large LCD display with backlight and friendly operation interface, ... for LAN, WAN, CATV, remote optical network, ect. Cooperate with ST800H Optical Power Meter, it can distinguish fiber, test optical ... adapter--Big LCD, intuitive, easy to use,--LED backlight switch on/off--Auto close back light in 8 seconds--Ni-MH rechargeable ...