1.optical fiber cable fault locator 2.2.5mm for FC/SC/ST, 1.25mm for LC/MU 3.Small size, drop resistant ... , high and stable power, makes it an ideal tool for failure identification in network installation.FeaturesNon-contact coupling design, which ensures no ... continue output and modulate output2.5mm ferrule universal adapter suits for FC, SC, E2000, ST etc650nm high LD PowerCompact structure with ...