... Battery Life (Low Power Waste) Visual red laser output; Effective inserting SM and MM fiber Rs6902 is designed for field personnel ... OTDR can not find. Example, Fiber cord, tail fiber,core fiber in junction box, bare fiber, ect.Technological ParametersModel RS6902Emitter Type LDWavelength ... connectorDimensions 22×185 mmWeight 150gAccessory Portable Waistband, User Manual. Visual Fiber Fault Locator