Mini OTDR SM Optical Time Domain Reflectometer VFL Visual Fault Locator 1310nm 1550nm Optical Fiber Ranger
FKEQU-089A1:1310nm,Dry battery
FKEQU-089B1:1550nm,Dry battery
FKEQU-089A2:1310nm,Lithium battery FKEQU-089B2:1550nm,Lithium battery