Usage:using the the fiber connector imputs the red light into the fiber,using for the fiber comparision of many fiber cable.It can detect the fiber fault that OTDR can not and the high wastage junction causing by the bending.Fitting to all kinds of the 2.5mm or 1.25mm fiber connector interface,exp SC/ST/FC/LC/E2000 Feature:delicate,imput the the visualization laser,high efficiency coincident the SM and MM fiber.Inspection broken segment 8KM.