Features Single Mode: Mainly used to compensate for OTDR testing blind spots, suitable for single mode cables at 1310nm 1550nm. Pop Up Cover: 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: There is no fusion joint in the middle of the optical fiber, which is small in size, light in weight, and easy to carry. 1. Single Mode: Mainly used to compensate for OTDR testing blind spots, suitable for single mode cables at 1310nm 1550nm. 2. Pop Up Cover: Simply press to pop the cover up, then remove the jumper cable and use, press again to close the cover, avoiding clutter! 3. 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. 4. Standard Connector: This OTDR extension cable has standard SC UPC to LC APC connector, ensuring easy connection. 5. Compact and Portable: There 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 How to Use: Press to pop the cover up, then remove the jumper and use it. After use, rewind the jumper back and press again to conceal it, avoiding clutter! PackageList: 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