... RANGE:2-30KM 3.Get CE, ROSH and UL certification 4.WAVELENGTH :635-680MM visual fault detection tester , led tester , remote tester The ... -LS650P)4,CAN CHOOSE DIFFERENT POWER, EASY TO RECOGNIZE THE OPTICAL FIBER BREAKPOINTS AND BEND;5,CAN GO THROUGH OPTICAL FIBER WITH PROTECTIVE LAYER ...