... CE, ROSH and UL certification 4.WAVELENGTH :635-680MM visual fault detection tester , led tester , remote tester The NS ... or cracking in fiber optic cables; Finding the faults of OTDR dead zone; End- to- end visual fiber identification.SPECIFICATIONS:1, ... 9,OUTPUT MODE: CW, FLASH10,WAVELENGTH :635-680MM11,APPLICABLE FIBER: SM,MM12,CONNECTOR: MULTI-PURPOSE ADAPTIVE INTERFACE13,OPERATING TEMPERATURE: ...