Features Easier Testing: Suitable for 1310nm and 1550nm single mode cables, OTDR fiber optic transmission cable is used to measure the loss and reflectivity of near end connections and remote non destructive insertion of fiber optic lines using OTDR. Good Sealing and Anti Drop: Waterproof and dustproof ABS has excellent mechanical properties, excellent impact strength, and can be used at extremely low temperatures. Reliable Working: The OTDR transmission cable is mainly used to compensate for the blind spots in OTDR testing. Good Performance: Excellent wear resistance, good electrical insulation, and almost unaffected by temperature, humidity, and frequency, suitable for use in most environments. Practical Use: The OTDR fiber optic extension cable adopts a coiled design, which is convenient to carry and compact and lightweight. Very suitable for short, medium, and long distance fiber optic network testing applications. Specification: Item Type: OTDR Launch Cable Box Model: SC/UPC-SC/UPC 1KM Application: For SM 1310/1550nm single mode cable Fiber Type: SM G652D 9/125um Loss: 0.33dB/KM at 1310nm, 0.19dB/KM at 1550nm. IL RL: <0.25dB, >-55dB Refractive Index: 1.46850 Range: Approx. 5000m / 16404.2ft Pulse Width: 10ns Measurement Time: 30s Package List:1 x OTDR Launch Cable1 x Storage Box1 x Storage Bag1 x User Manual Package List 1 x OTDR Launch Cable 1 x Storage Box 1 x Storage Bag 1 x User Manual