... personnel who need an efficient and economical tool for fiber tracing fiber routing and continuity checking in an optical network during ... which OTDR can not find. Example, Fiber cord, tail fiber,core fiber in junction box, bare fiber, ect.Technological ParametersModel RS6902Emitter Type LDWavelength ... 22×185 mmWeight 150gAccessory Portable Waistband, User Manual. Visual Fiber Fault Locator