Features [Single Mode]: OTDR Launch Cable Box Mainly used to compensate for OTDR testing blind spots, suitable for single mode cables at 1310nm 1550nm. [Pop Up Cover]: OTDR Jumper Cable Box Simply press to pop the cover up, then remove the jumper cable and use, press again to close the cover, avoiding clutter! [Multi Purpose]: OTDR launch cable is used to measure the loss and reflectivity of near end connections, as well as to remotely insert lossless optical fiber lines. [Standard Connector]: This OTDR extension cable has standard SC UPC to LC APC connector, ensuring easy connection. [Compact and Portable]: Fiber optic test cable is no fusion joint in the middle of the optical fiber, which is small in size, light in weight, and easy to carry. Features: 1. OTDR Launch Cable Box Mainly used to compensate for OTDR testing blind spots, suitable for single mode cables at 1310nm 1550nm. 2. OTDR Jumper Cable Box Simply press to pop the cover up, then remove the jumper cable and use, press again to close the cover, avoiding clutter! 3. OTDR launch cable is used to measure the loss and reflectivity of near end connections, as well as to remotely insert lossless optical fiber lines. 4. This OTDR extension cable has standard SC UPC to LC APC connector, ensuring easy connection. 5. Fiber optic test cable is no fusion joint in the middle of the optical fiber, which is small in size, light in weight, and easy to carry. Specification: Item Type: OTDR Launch Cable Box Material: ABS Model: AUA 20 Connector: SCUPC to LCAPC Single Mode Package List: 1 x OTDR Launch Cable Box 2 x Accessories 1 x Lanyard Note: Most of the wire lengths of the product are bare fibers and cannot be removed. Only about one meter of interface tail fibers are left at both ends. Package List 1 x OTDR Launch Cable Box 2 x Accessories 1 x Lanyard